Home / 31,372.08-47,057.84-7,679.74

Finding the Fourth Proportional to 31,372.08, 47,057.84 and 7,679.74

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Solution

The fourth proportional to 31,372.08, 47,057.84 and 7,679.74 is: 11,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.08 : 47,057.84 = 7,679.74 : x
  2. Step 2: Convert to fraction form
    31,372.08/47,057.84 = 7,679.74/x
  3. Step 3: Cross multiply
    31,372.08x = 47,057.84 × 7,679.74
  4. Step 4: Simplify right side
    31,372.08x = 361,391,783.20
  5. Step 5: Solve for x
    x = 361,391,783.20/31,372.08
  6. Step 6: Final answer
    x = 11,519.53

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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.