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Finding the Fourth Proportional to 15,785,802, 21,784,406.80 and 8,542,458

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Solution

The fourth proportional to 15,785,802, 21,784,406.80 and 8,542,458 is: 11,788,592.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785,802 : 21,784,406.80 = 8,542,458 : x
  2. Step 2: Convert to fraction form
    15,785,802/21,784,406.80 = 8,542,458/x
  3. Step 3: Cross multiply
    15,785,802x = 21,784,406.80 × 8,542,458
  4. Step 4: Simplify right side
    15,785,802x = 186,092,380,143,914.41
  5. Step 5: Solve for x
    x = 186,092,380,143,914.41/15,785,802
  6. Step 6: Final answer
    x = 11,788,592.06

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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.