Home / 13,387.29-18,474.45-8,082.12

Finding the Fourth Proportional to 13,387.29, 18,474.45 and 8,082.12

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Solution

The fourth proportional to 13,387.29, 18,474.45 and 8,082.12 is: 11,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.29 : 18,474.45 = 8,082.12 : x
  2. Step 2: Convert to fraction form
    13,387.29/18,474.45 = 8,082.12/x
  3. Step 3: Cross multiply
    13,387.29x = 18,474.45 × 8,082.12
  4. Step 4: Simplify right side
    13,387.29x = 149,312,721.83
  5. Step 5: Solve for x
    x = 149,312,721.83/13,387.29
  6. Step 6: Final answer
    x = 11,153.32

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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.