Home / 22,272.70-30,715.12-13,318.76

Finding the Fourth Proportional to 22,272.70, 30,715.12 and 13,318.76

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Solution

The fourth proportional to 22,272.70, 30,715.12 and 13,318.76 is: 18,367.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,272.70 : 30,715.12 = 13,318.76 : x
  2. Step 2: Convert to fraction form
    22,272.70/30,715.12 = 13,318.76/x
  3. Step 3: Cross multiply
    22,272.70x = 30,715.12 × 13,318.76
  4. Step 4: Simplify right side
    22,272.70x = 409,087,311.65
  5. Step 5: Solve for x
    x = 409,087,311.65/22,272.70
  6. Step 6: Final answer
    x = 18,367.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.