Home / 18,339.12-27,505.17-5,188.32

Finding the Fourth Proportional to 18,339.12, 27,505.17 and 5,188.32

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Solution

The fourth proportional to 18,339.12, 27,505.17 and 5,188.32 is: 7,781.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.12 : 27,505.17 = 5,188.32 : x
  2. Step 2: Convert to fraction form
    18,339.12/27,505.17 = 5,188.32/x
  3. Step 3: Cross multiply
    18,339.12x = 27,505.17 × 5,188.32
  4. Step 4: Simplify right side
    18,339.12x = 142,705,623.61
  5. Step 5: Solve for x
    x = 142,705,623.61/18,339.12
  6. Step 6: Final answer
    x = 7,781.49

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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.