Home / 21,738.60-32,572.26-20,929.50

Finding the Fourth Proportional to 21,738.60, 32,572.26 and 20,929.50

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Solution

The fourth proportional to 21,738.60, 32,572.26 and 20,929.50 is: 31,359.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.60 : 32,572.26 = 20,929.50 : x
  2. Step 2: Convert to fraction form
    21,738.60/32,572.26 = 20,929.50/x
  3. Step 3: Cross multiply
    21,738.60x = 32,572.26 × 20,929.50
  4. Step 4: Simplify right side
    21,738.60x = 681,721,115.67
  5. Step 5: Solve for x
    x = 681,721,115.67/21,738.60
  6. Step 6: Final answer
    x = 31,359.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.