Home / 20,455.10-28,230.17-12,502.62

Finding the Fourth Proportional to 20,455.10, 28,230.17 and 12,502.62

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Solution

The fourth proportional to 20,455.10, 28,230.17 and 12,502.62 is: 17,254.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.10 : 28,230.17 = 12,502.62 : x
  2. Step 2: Convert to fraction form
    20,455.10/28,230.17 = 12,502.62/x
  3. Step 3: Cross multiply
    20,455.10x = 28,230.17 × 12,502.62
  4. Step 4: Simplify right side
    20,455.10x = 352,951,088.05
  5. Step 5: Solve for x
    x = 352,951,088.05/20,455.10
  6. Step 6: Final answer
    x = 17,254.92

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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.