Home / 18,088.55-27,138.98-11,417.29

Finding the Fourth Proportional to 18,088.55, 27,138.98 and 11,417.29

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Solution

The fourth proportional to 18,088.55, 27,138.98 and 11,417.29 is: 17,129.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,088.55 : 27,138.98 = 11,417.29 : x
  2. Step 2: Convert to fraction form
    18,088.55/27,138.98 = 11,417.29/x
  3. Step 3: Cross multiply
    18,088.55x = 27,138.98 × 11,417.29
  4. Step 4: Simplify right side
    18,088.55x = 309,853,604.96
  5. Step 5: Solve for x
    x = 309,853,604.96/18,088.55
  6. Step 6: Final answer
    x = 17,129.82

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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.