Home / 10,538.47-15,809.99-3,143.53

Finding the Fourth Proportional to 10,538.47, 15,809.99 and 3,143.53

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Solution

The fourth proportional to 10,538.47, 15,809.99 and 3,143.53 is: 4,715.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,538.47 : 15,809.99 = 3,143.53 : x
  2. Step 2: Convert to fraction form
    10,538.47/15,809.99 = 3,143.53/x
  3. Step 3: Cross multiply
    10,538.47x = 15,809.99 × 3,143.53
  4. Step 4: Simplify right side
    10,538.47x = 49,699,177.86
  5. Step 5: Solve for x
    x = 49,699,177.86/10,538.47
  6. Step 6: Final answer
    x = 4,715.98

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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.