Home / 20,559.28-28,357.17-14,188.30

Finding the Fourth Proportional to 20,559.28, 28,357.17 and 14,188.30

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Solution

The fourth proportional to 20,559.28, 28,357.17 and 14,188.30 is: 19,569.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.28 : 28,357.17 = 14,188.30 : x
  2. Step 2: Convert to fraction form
    20,559.28/28,357.17 = 14,188.30/x
  3. Step 3: Cross multiply
    20,559.28x = 28,357.17 × 14,188.30
  4. Step 4: Simplify right side
    20,559.28x = 402,340,035.11
  5. Step 5: Solve for x
    x = 402,340,035.11/20,559.28
  6. Step 6: Final answer
    x = 19,569.75

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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.