Home / 9,919.38-14,882.81-5,239.20

Finding the Fourth Proportional to 9,919.38, 14,882.81 and 5,239.20

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Solution

The fourth proportional to 9,919.38, 14,882.81 and 5,239.20 is: 7,860.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.38 : 14,882.81 = 5,239.20 : x
  2. Step 2: Convert to fraction form
    9,919.38/14,882.81 = 5,239.20/x
  3. Step 3: Cross multiply
    9,919.38x = 14,882.81 × 5,239.20
  4. Step 4: Simplify right side
    9,919.38x = 77,973,943.74
  5. Step 5: Solve for x
    x = 77,973,943.74/9,919.38
  6. Step 6: Final answer
    x = 7,860.77

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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.