Home / 20,819.28-28,712.45-14,757.53

Finding the Fourth Proportional to 20,819.28, 28,712.45 and 14,757.53

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Solution

The fourth proportional to 20,819.28, 28,712.45 and 14,757.53 is: 20,352.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.28 : 28,712.45 = 14,757.53 : x
  2. Step 2: Convert to fraction form
    20,819.28/28,712.45 = 14,757.53/x
  3. Step 3: Cross multiply
    20,819.28x = 28,712.45 × 14,757.53
  4. Step 4: Simplify right side
    20,819.28x = 423,724,842.25
  5. Step 5: Solve for x
    x = 423,724,842.25/20,819.28
  6. Step 6: Final answer
    x = 20,352.52

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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.