Home / 28,159.13-42,222.29-12,363.53

Finding the Fourth Proportional to 28,159.13, 42,222.29 and 12,363.53

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Solution

The fourth proportional to 28,159.13, 42,222.29 and 12,363.53 is: 18,538.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.13 : 42,222.29 = 12,363.53 : x
  2. Step 2: Convert to fraction form
    28,159.13/42,222.29 = 12,363.53/x
  3. Step 3: Cross multiply
    28,159.13x = 42,222.29 × 12,363.53
  4. Step 4: Simplify right side
    28,159.13x = 522,016,276.15
  5. Step 5: Solve for x
    x = 522,016,276.15/28,159.13
  6. Step 6: Final answer
    x = 18,538.09

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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.