Home / 20,406.28-28,162.04-11,454.44

Finding the Fourth Proportional to 20,406.28, 28,162.04 and 11,454.44

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Solution

The fourth proportional to 20,406.28, 28,162.04 and 11,454.44 is: 15,807.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.28 : 28,162.04 = 11,454.44 : x
  2. Step 2: Convert to fraction form
    20,406.28/28,162.04 = 11,454.44/x
  3. Step 3: Cross multiply
    20,406.28x = 28,162.04 × 11,454.44
  4. Step 4: Simplify right side
    20,406.28x = 322,580,397.46
  5. Step 5: Solve for x
    x = 322,580,397.46/20,406.28
  6. Step 6: Final answer
    x = 15,807.90

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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.