Home / 15,717,331.52-21,678,225.80-13,878,545.68

Finding the Fourth Proportional to 15,717,331.52, 21,678,225.80 and 13,878,545.68

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Solution

The fourth proportional to 15,717,331.52, 21,678,225.80 and 13,878,545.68 is: 19,142,069.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717,331.52 : 21,678,225.80 = 13,878,545.68 : x
  2. Step 2: Convert to fraction form
    15,717,331.52/21,678,225.80 = 13,878,545.68/x
  3. Step 3: Cross multiply
    15,717,331.52x = 21,678,225.80 × 13,878,545.68
  4. Step 4: Simplify right side
    15,717,331.52x = 300,862,247,026,654.56
  5. Step 5: Solve for x
    x = 300,862,247,026,654.56/15,717,331.52
  6. Step 6: Final answer
    x = 19,142,069.16

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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.