Home / 18,531.66-27,790.94-5,381.30

Finding the Fourth Proportional to 18,531.66, 27,790.94 and 5,381.30

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Solution

The fourth proportional to 18,531.66, 27,790.94 and 5,381.30 is: 8,070.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.66 : 27,790.94 = 5,381.30 : x
  2. Step 2: Convert to fraction form
    18,531.66/27,790.94 = 5,381.30/x
  3. Step 3: Cross multiply
    18,531.66x = 27,790.94 × 5,381.30
  4. Step 4: Simplify right side
    18,531.66x = 149,551,385.42
  5. Step 5: Solve for x
    x = 149,551,385.42/18,531.66
  6. Step 6: Final answer
    x = 8,070.05

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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.