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Finding the Fourth Proportional to 42,001.40, 63,026.40 and 15,708.80

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Solution

The fourth proportional to 42,001.40, 63,026.40 and 15,708.80 is: 23,572.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,001.40 : 63,026.40 = 15,708.80 : x
  2. Step 2: Convert to fraction form
    42,001.40/63,026.40 = 15,708.80/x
  3. Step 3: Cross multiply
    42,001.40x = 63,026.40 × 15,708.80
  4. Step 4: Simplify right side
    42,001.40x = 990,069,112.32
  5. Step 5: Solve for x
    x = 990,069,112.32/42,001.40
  6. Step 6: Final answer
    x = 23,572.29

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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.