Home / 20,459.14-28,232.68-11,384.95

Finding the Fourth Proportional to 20,459.14, 28,232.68 and 11,384.95

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Solution

The fourth proportional to 20,459.14, 28,232.68 and 11,384.95 is: 15,710.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.14 : 28,232.68 = 11,384.95 : x
  2. Step 2: Convert to fraction form
    20,459.14/28,232.68 = 11,384.95/x
  3. Step 3: Cross multiply
    20,459.14x = 28,232.68 × 11,384.95
  4. Step 4: Simplify right side
    20,459.14x = 321,427,650.17
  5. Step 5: Solve for x
    x = 321,427,650.17/20,459.14
  6. Step 6: Final answer
    x = 15,710.71

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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.