Home / 28,186.60-42,280.32-13,397.04

Finding the Fourth Proportional to 28,186.60, 42,280.32 and 13,397.04

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Solution

The fourth proportional to 28,186.60, 42,280.32 and 13,397.04 is: 20,095.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.60 : 42,280.32 = 13,397.04 : x
  2. Step 2: Convert to fraction form
    28,186.60/42,280.32 = 13,397.04/x
  3. Step 3: Cross multiply
    28,186.60x = 42,280.32 × 13,397.04
  4. Step 4: Simplify right side
    28,186.60x = 566,431,138.25
  5. Step 5: Solve for x
    x = 566,431,138.25/28,186.60
  6. Step 6: Final answer
    x = 20,095.76

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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.