Home / 22,381.38-30,887.01-12,310.74

Finding the Fourth Proportional to 22,381.38, 30,887.01 and 12,310.74

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Solution

The fourth proportional to 22,381.38, 30,887.01 and 12,310.74 is: 16,989.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,381.38 : 30,887.01 = 12,310.74 : x
  2. Step 2: Convert to fraction form
    22,381.38/30,887.01 = 12,310.74/x
  3. Step 3: Cross multiply
    22,381.38x = 30,887.01 × 12,310.74
  4. Step 4: Simplify right side
    22,381.38x = 380,241,949.49
  5. Step 5: Solve for x
    x = 380,241,949.49/22,381.38
  6. Step 6: Final answer
    x = 16,989.21

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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.