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Finding the Fourth Proportional to 40,657.65, 60,951.42 and 15,715.20

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Solution

The fourth proportional to 40,657.65, 60,951.42 and 15,715.20 is: 23,559.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,657.65 : 60,951.42 = 15,715.20 : x
  2. Step 2: Convert to fraction form
    40,657.65/60,951.42 = 15,715.20/x
  3. Step 3: Cross multiply
    40,657.65x = 60,951.42 × 15,715.20
  4. Step 4: Simplify right side
    40,657.65x = 957,863,755.58
  5. Step 5: Solve for x
    x = 957,863,755.58/40,657.65
  6. Step 6: Final answer
    x = 23,559.25

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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.