Home / 15,785,790-21,784,390.20-8,542,446

Finding the Fourth Proportional to 15,785,790, 21,784,390.20 and 8,542,446

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Solution

The fourth proportional to 15,785,790, 21,784,390.20 and 8,542,446 is: 11,788,575.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785,790 : 21,784,390.20 = 8,542,446 : x
  2. Step 2: Convert to fraction form
    15,785,790/21,784,390.20 = 8,542,446/x
  3. Step 3: Cross multiply
    15,785,790x = 21,784,390.20 × 8,542,446
  4. Step 4: Simplify right side
    15,785,790x = 186,091,976,926,429.19
  5. Step 5: Solve for x
    x = 186,091,976,926,429.19/15,785,790
  6. Step 6: Final answer
    x = 11,788,575.48

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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.