Home / 10,721.28-16,082.10-2,930.28

Finding the Fourth Proportional to 10,721.28, 16,082.10 and 2,930.28

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Solution

The fourth proportional to 10,721.28, 16,082.10 and 2,930.28 is: 4,395.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.28 : 16,082.10 = 2,930.28 : x
  2. Step 2: Convert to fraction form
    10,721.28/16,082.10 = 2,930.28/x
  3. Step 3: Cross multiply
    10,721.28x = 16,082.10 × 2,930.28
  4. Step 4: Simplify right side
    10,721.28x = 47,125,055.99
  5. Step 5: Solve for x
    x = 47,125,055.99/10,721.28
  6. Step 6: Final answer
    x = 4,395.47

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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.