Home / 20,818.38-31,227.03-9,718.95

Finding the Fourth Proportional to 20,818.38, 31,227.03 and 9,718.95

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Solution

The fourth proportional to 20,818.38, 31,227.03 and 9,718.95 is: 14,578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.38 : 31,227.03 = 9,718.95 : x
  2. Step 2: Convert to fraction form
    20,818.38/31,227.03 = 9,718.95/x
  3. Step 3: Cross multiply
    20,818.38x = 31,227.03 × 9,718.95
  4. Step 4: Simplify right side
    20,818.38x = 303,493,943.22
  5. Step 5: Solve for x
    x = 303,493,943.22/20,818.38
  6. Step 6: Final answer
    x = 14,578.17

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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.