Home / 20,437.08-28,206.22-12,483.88

Finding the Fourth Proportional to 20,437.08, 28,206.22 and 12,483.88

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Solution

The fourth proportional to 20,437.08, 28,206.22 and 12,483.88 is: 17,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.08 : 28,206.22 = 12,483.88 : x
  2. Step 2: Convert to fraction form
    20,437.08/28,206.22 = 12,483.88/x
  3. Step 3: Cross multiply
    20,437.08x = 28,206.22 × 12,483.88
  4. Step 4: Simplify right side
    20,437.08x = 352,123,065.73
  5. Step 5: Solve for x
    x = 352,123,065.73/20,437.08
  6. Step 6: Final answer
    x = 17,229.62

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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.