Home / 13,260,853,851.09-18,299,885,220.40-7,239,359,254.77

Finding the Fourth Proportional to 13,260,853,851.09, 18,299,885,220.40 and 7,239,359,254.77

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Solution

The fourth proportional to 13,260,853,851.09, 18,299,885,220.40 and 7,239,359,254.77 is: 9,990,264,949.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260,853,851.09 : 18,299,885,220.40 = 7,239,359,254.77 : x
  2. Step 2: Convert to fraction form
    13,260,853,851.09/18,299,885,220.40 = 7,239,359,254.77/x
  3. Step 3: Cross multiply
    13,260,853,851.09x = 18,299,885,220.40 × 7,239,359,254.77
  4. Step 4: Simplify right side
    13,260,853,851.09x = 132,479,443,431,531,495,424
  5. Step 5: Solve for x
    x = 132,479,443,431,531,495,424/13,260,853,851.09
  6. Step 6: Final answer
    x = 9,990,264,949.69

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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.