Home / 18,439.11-27,662.76-5,290.47

Finding the Fourth Proportional to 18,439.11, 27,662.76 and 5,290.47

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Solution

The fourth proportional to 18,439.11, 27,662.76 and 5,290.47 is: 7,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.11 : 27,662.76 = 5,290.47 : x
  2. Step 2: Convert to fraction form
    18,439.11/27,662.76 = 5,290.47/x
  3. Step 3: Cross multiply
    18,439.11x = 27,662.76 × 5,290.47
  4. Step 4: Simplify right side
    18,439.11x = 146,349,001.90
  5. Step 5: Solve for x
    x = 146,349,001.90/18,439.11
  6. Step 6: Final answer
    x = 7,936.88

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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.