Home / 18,113.62-27,169.89-7,439.61

Finding the Fourth Proportional to 18,113.62, 27,169.89 and 7,439.61

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Solution

The fourth proportional to 18,113.62, 27,169.89 and 7,439.61 is: 11,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.62 : 27,169.89 = 7,439.61 : x
  2. Step 2: Convert to fraction form
    18,113.62/27,169.89 = 7,439.61/x
  3. Step 3: Cross multiply
    18,113.62x = 27,169.89 × 7,439.61
  4. Step 4: Simplify right side
    18,113.62x = 202,133,319.81
  5. Step 5: Solve for x
    x = 202,133,319.81/18,113.62
  6. Step 6: Final answer
    x = 11,159.19

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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.