Home / 13,260,853,854.10-18,299,885,224.53-7,239,359,257.78

Finding the Fourth Proportional to 13,260,853,854.10, 18,299,885,224.53 and 7,239,359,257.78

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Solution

The fourth proportional to 13,260,853,854.10, 18,299,885,224.53 and 7,239,359,257.78 is: 9,990,264,953.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260,853,854.10 : 18,299,885,224.53 = 7,239,359,257.78 : x
  2. Step 2: Convert to fraction form
    13,260,853,854.10/18,299,885,224.53 = 7,239,359,257.78/x
  3. Step 3: Cross multiply
    13,260,853,854.10x = 18,299,885,224.53 × 7,239,359,257.78
  4. Step 4: Simplify right side
    13,260,853,854.10x = 132,479,443,516,512,681,984
  5. Step 5: Solve for x
    x = 132,479,443,516,512,681,984/13,260,853,854.10
  6. Step 6: Final answer
    x = 9,990,264,953.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.