Home / 22,141.60-30,493.20-21,657.76

Finding the Fourth Proportional to 22,141.60, 30,493.20 and 21,657.76

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Solution

The fourth proportional to 22,141.60, 30,493.20 and 21,657.76 is: 29,826.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,141.60 : 30,493.20 = 21,657.76 : x
  2. Step 2: Convert to fraction form
    22,141.60/30,493.20 = 21,657.76/x
  3. Step 3: Cross multiply
    22,141.60x = 30,493.20 × 21,657.76
  4. Step 4: Simplify right side
    22,141.60x = 660,414,407.23
  5. Step 5: Solve for x
    x = 660,414,407.23/22,141.60
  6. Step 6: Final answer
    x = 29,826.86

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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.