Home / 20,761.48-31,127.13-8,277.76

Finding the Fourth Proportional to 20,761.48, 31,127.13 and 8,277.76

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Solution

The fourth proportional to 20,761.48, 31,127.13 and 8,277.76 is: 12,410.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.48 : 31,127.13 = 8,277.76 : x
  2. Step 2: Convert to fraction form
    20,761.48/31,127.13 = 8,277.76/x
  3. Step 3: Cross multiply
    20,761.48x = 31,127.13 × 8,277.76
  4. Step 4: Simplify right side
    20,761.48x = 257,662,755.99
  5. Step 5: Solve for x
    x = 257,662,755.99/20,761.48
  6. Step 6: Final answer
    x = 12,410.62

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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.