Home / 20,432.60-28,186.70-17,740.16

Finding the Fourth Proportional to 20,432.60, 28,186.70 and 17,740.16

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Solution

The fourth proportional to 20,432.60, 28,186.70 and 17,740.16 is: 24,472.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.60 : 28,186.70 = 17,740.16 : x
  2. Step 2: Convert to fraction form
    20,432.60/28,186.70 = 17,740.16/x
  3. Step 3: Cross multiply
    20,432.60x = 28,186.70 × 17,740.16
  4. Step 4: Simplify right side
    20,432.60x = 500,036,539.29
  5. Step 5: Solve for x
    x = 500,036,539.29/20,432.60
  6. Step 6: Final answer
    x = 24,472.49

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1.5x scale

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.