Home / 10,484.52-15,715.44-5,290.80

Finding the Fourth Proportional to 10,484.52, 15,715.44 and 5,290.80

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Solution

The fourth proportional to 10,484.52, 15,715.44 and 5,290.80 is: 7,930.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,484.52 : 15,715.44 = 5,290.80 : x
  2. Step 2: Convert to fraction form
    10,484.52/15,715.44 = 5,290.80/x
  3. Step 3: Cross multiply
    10,484.52x = 15,715.44 × 5,290.80
  4. Step 4: Simplify right side
    10,484.52x = 83,147,249.95
  5. Step 5: Solve for x
    x = 83,147,249.95/10,484.52
  6. Step 6: Final answer
    x = 7,930.48

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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.