Home / 28,116.11-42,132.56-12,306.53

Finding the Fourth Proportional to 28,116.11, 42,132.56 and 12,306.53

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Solution

The fourth proportional to 28,116.11, 42,132.56 and 12,306.53 is: 18,441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.11 : 42,132.56 = 12,306.53 : x
  2. Step 2: Convert to fraction form
    28,116.11/42,132.56 = 12,306.53/x
  3. Step 3: Cross multiply
    28,116.11x = 42,132.56 × 12,306.53
  4. Step 4: Simplify right side
    28,116.11x = 518,505,657.42
  5. Step 5: Solve for x
    x = 518,505,657.42/28,116.11
  6. Step 6: Final answer
    x = 18,441.58

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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.