Home / 31,983.18-47,969.10-18,820.14

Finding the Fourth Proportional to 31,983.18, 47,969.10 and 18,820.14

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Solution

The fourth proportional to 31,983.18, 47,969.10 and 18,820.14 is: 28,226.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,983.18 : 47,969.10 = 18,820.14 : x
  2. Step 2: Convert to fraction form
    31,983.18/47,969.10 = 18,820.14/x
  3. Step 3: Cross multiply
    31,983.18x = 47,969.10 × 18,820.14
  4. Step 4: Simplify right side
    31,983.18x = 902,785,177.67
  5. Step 5: Solve for x
    x = 902,785,177.67/31,983.18
  6. Step 6: Final answer
    x = 28,226.87

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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.