Home / 10,715.52-16,083.65-5,172.75

Finding the Fourth Proportional to 10,715.52, 16,083.65 and 5,172.75

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Solution

The fourth proportional to 10,715.52, 16,083.65 and 5,172.75 is: 7,764.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,715.52 : 16,083.65 = 5,172.75 : x
  2. Step 2: Convert to fraction form
    10,715.52/16,083.65 = 5,172.75/x
  3. Step 3: Cross multiply
    10,715.52x = 16,083.65 × 5,172.75
  4. Step 4: Simplify right side
    10,715.52x = 83,196,700.54
  5. Step 5: Solve for x
    x = 83,196,700.54/10,715.52
  6. Step 6: Final answer
    x = 7,764.13

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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.