Home / 10,769.88-16,127.28-6,390.48

Finding the Fourth Proportional to 10,769.88, 16,127.28 and 6,390.48

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Solution

The fourth proportional to 10,769.88, 16,127.28 and 6,390.48 is: 9,569.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,769.88 : 16,127.28 = 6,390.48 : x
  2. Step 2: Convert to fraction form
    10,769.88/16,127.28 = 6,390.48/x
  3. Step 3: Cross multiply
    10,769.88x = 16,127.28 × 6,390.48
  4. Step 4: Simplify right side
    10,769.88x = 103,061,060.29
  5. Step 5: Solve for x
    x = 103,061,060.29/10,769.88
  6. Step 6: Final answer
    x = 9,569.38

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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.