Home / 31,977.68-47,939.16-12,270.38

Finding the Fourth Proportional to 31,977.68, 47,939.16 and 12,270.38

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Solution

The fourth proportional to 31,977.68, 47,939.16 and 12,270.38 is: 18,395.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,977.68 : 47,939.16 = 12,270.38 : x
  2. Step 2: Convert to fraction form
    31,977.68/47,939.16 = 12,270.38/x
  3. Step 3: Cross multiply
    31,977.68x = 47,939.16 × 12,270.38
  4. Step 4: Simplify right side
    31,977.68x = 588,231,710.08
  5. Step 5: Solve for x
    x = 588,231,710.08/31,977.68
  6. Step 6: Final answer
    x = 18,395.07

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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.