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Finding the Fourth Proportional to 42,265.92, 63,413.28 and 15,978.24

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Solution

The fourth proportional to 42,265.92, 63,413.28 and 15,978.24 is: 23,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,265.92 : 63,413.28 = 15,978.24 : x
  2. Step 2: Convert to fraction form
    42,265.92/63,413.28 = 15,978.24/x
  3. Step 3: Cross multiply
    42,265.92x = 63,413.28 × 15,978.24
  4. Step 4: Simplify right side
    42,265.92x = 1,013,232,607.03
  5. Step 5: Solve for x
    x = 1,013,232,607.03/42,265.92
  6. Step 6: Final answer
    x = 23,972.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.