Home / 20,458.68-28,234.48-12,502.44

Finding the Fourth Proportional to 20,458.68, 28,234.48 and 12,502.44

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Solution

The fourth proportional to 20,458.68, 28,234.48 and 12,502.44 is: 17,254.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.68 : 28,234.48 = 12,502.44 : x
  2. Step 2: Convert to fraction form
    20,458.68/28,234.48 = 12,502.44/x
  3. Step 3: Cross multiply
    20,458.68x = 28,234.48 × 12,502.44
  4. Step 4: Simplify right side
    20,458.68x = 352,999,892.13
  5. Step 5: Solve for x
    x = 352,999,892.13/20,458.68
  6. Step 6: Final answer
    x = 17,254.28

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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.