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Finding the Fourth Proportional to 42,014.70, 63,019.80 and 15,717.24

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Solution

The fourth proportional to 42,014.70, 63,019.80 and 15,717.24 is: 23,575.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,014.70 : 63,019.80 = 15,717.24 : x
  2. Step 2: Convert to fraction form
    42,014.70/63,019.80 = 15,717.24/x
  3. Step 3: Cross multiply
    42,014.70x = 63,019.80 × 15,717.24
  4. Step 4: Simplify right side
    42,014.70x = 990,497,321.35
  5. Step 5: Solve for x
    x = 990,497,321.35/42,014.70
  6. Step 6: Final answer
    x = 23,575.02

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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.