Home / 20,872.17-31,320.54-7,733.70

Finding the Fourth Proportional to 20,872.17, 31,320.54 and 7,733.70

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Solution

The fourth proportional to 20,872.17, 31,320.54 and 7,733.70 is: 11,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.17 : 31,320.54 = 7,733.70 : x
  2. Step 2: Convert to fraction form
    20,872.17/31,320.54 = 7,733.70/x
  3. Step 3: Cross multiply
    20,872.17x = 31,320.54 × 7,733.70
  4. Step 4: Simplify right side
    20,872.17x = 242,223,660.20
  5. Step 5: Solve for x
    x = 242,223,660.20/20,872.17
  6. Step 6: Final answer
    x = 11,605.10

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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.