Home / 20,974.17-31,461.27-9,127.53

Finding the Fourth Proportional to 20,974.17, 31,461.27 and 9,127.53

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Solution

The fourth proportional to 20,974.17, 31,461.27 and 9,127.53 is: 13,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.17 : 31,461.27 = 9,127.53 : x
  2. Step 2: Convert to fraction form
    20,974.17/31,461.27 = 9,127.53/x
  3. Step 3: Cross multiply
    20,974.17x = 31,461.27 × 9,127.53
  4. Step 4: Simplify right side
    20,974.17x = 287,163,685.76
  5. Step 5: Solve for x
    x = 287,163,685.76/20,974.17
  6. Step 6: Final answer
    x = 13,691.30

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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.