Home / 10,864.45-16,291.17-5,309.47

Finding the Fourth Proportional to 10,864.45, 16,291.17 and 5,309.47

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Solution

The fourth proportional to 10,864.45, 16,291.17 and 5,309.47 is: 7,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.45 : 16,291.17 = 5,309.47 : x
  2. Step 2: Convert to fraction form
    10,864.45/16,291.17 = 5,309.47/x
  3. Step 3: Cross multiply
    10,864.45x = 16,291.17 × 5,309.47
  4. Step 4: Simplify right side
    10,864.45x = 86,497,478.38
  5. Step 5: Solve for x
    x = 86,497,478.38/10,864.45
  6. Step 6: Final answer
    x = 7,961.51

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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.