Home / 13,260,853,852.09-18,299,885,221.78-7,239,359,255.77

Finding the Fourth Proportional to 13,260,853,852.09, 18,299,885,221.78 and 7,239,359,255.77

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Solution

The fourth proportional to 13,260,853,852.09, 18,299,885,221.78 and 7,239,359,255.77 is: 9,990,264,951.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260,853,852.09 : 18,299,885,221.78 = 7,239,359,255.77 : x
  2. Step 2: Convert to fraction form
    13,260,853,852.09/18,299,885,221.78 = 7,239,359,255.77/x
  3. Step 3: Cross multiply
    13,260,853,852.09x = 18,299,885,221.78 × 7,239,359,255.77
  4. Step 4: Simplify right side
    13,260,853,852.09x = 132,479,443,459,821,682,688
  5. Step 5: Solve for x
    x = 132,479,443,459,821,682,688/13,260,853,852.09
  6. Step 6: Final answer
    x = 9,990,264,951.07

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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.