Home / 20,572.94-28,390.86-11,141.70

Finding the Fourth Proportional to 20,572.94, 28,390.86 and 11,141.70

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Solution

The fourth proportional to 20,572.94, 28,390.86 and 11,141.70 is: 15,375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.94 : 28,390.86 = 11,141.70 : x
  2. Step 2: Convert to fraction form
    20,572.94/28,390.86 = 11,141.70/x
  3. Step 3: Cross multiply
    20,572.94x = 28,390.86 × 11,141.70
  4. Step 4: Simplify right side
    20,572.94x = 316,322,444.86
  5. Step 5: Solve for x
    x = 316,322,444.86/20,572.94
  6. Step 6: Final answer
    x = 15,375.66

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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.