Home / 20,755.50-31,132.92-9,655.98

Finding the Fourth Proportional to 20,755.50, 31,132.92 and 9,655.98

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Solution

The fourth proportional to 20,755.50, 31,132.92 and 9,655.98 is: 14,483.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.50 : 31,132.92 = 9,655.98 : x
  2. Step 2: Convert to fraction form
    20,755.50/31,132.92 = 9,655.98/x
  3. Step 3: Cross multiply
    20,755.50x = 31,132.92 × 9,655.98
  4. Step 4: Simplify right side
    20,755.50x = 300,618,852.86
  5. Step 5: Solve for x
    x = 300,618,852.86/20,755.50
  6. Step 6: Final answer
    x = 14,483.82

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1.5x scale

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.