Home / 20,451.60-28,225.53-11,377.86

Finding the Fourth Proportional to 20,451.60, 28,225.53 and 11,377.86

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Solution

The fourth proportional to 20,451.60, 28,225.53 and 11,377.86 is: 15,702.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.60 : 28,225.53 = 11,377.86 : x
  2. Step 2: Convert to fraction form
    20,451.60/28,225.53 = 11,377.86/x
  3. Step 3: Cross multiply
    20,451.60x = 28,225.53 × 11,377.86
  4. Step 4: Simplify right side
    20,451.60x = 321,146,128.77
  5. Step 5: Solve for x
    x = 321,146,128.77/20,451.60
  6. Step 6: Final answer
    x = 15,702.74

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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.