Home / 20,398.60-28,152.99-11,326.04

Finding the Fourth Proportional to 20,398.60, 28,152.99 and 11,326.04

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Solution

The fourth proportional to 20,398.60, 28,152.99 and 11,326.04 is: 15,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.60 : 28,152.99 = 11,326.04 : x
  2. Step 2: Convert to fraction form
    20,398.60/28,152.99 = 11,326.04/x
  3. Step 3: Cross multiply
    20,398.60x = 28,152.99 × 11,326.04
  4. Step 4: Simplify right side
    20,398.60x = 318,861,927.11
  5. Step 5: Solve for x
    x = 318,861,927.11/20,398.60
  6. Step 6: Final answer
    x = 15,631.56

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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.