Home / 20,432.56-28,214.88-12,892.32

Finding the Fourth Proportional to 20,432.56, 28,214.88 and 12,892.32

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Solution

The fourth proportional to 20,432.56, 28,214.88 and 12,892.32 is: 17,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.56 : 28,214.88 = 12,892.32 : x
  2. Step 2: Convert to fraction form
    20,432.56/28,214.88 = 12,892.32/x
  3. Step 3: Cross multiply
    20,432.56x = 28,214.88 × 12,892.32
  4. Step 4: Simplify right side
    20,432.56x = 363,755,261.72
  5. Step 5: Solve for x
    x = 363,755,261.72/20,432.56
  6. Step 6: Final answer
    x = 17,802.73

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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.