Home / 31,905.76-47,855.28-8,534.56

Finding the Fourth Proportional to 31,905.76, 47,855.28 and 8,534.56

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Solution

The fourth proportional to 31,905.76, 47,855.28 and 8,534.56 is: 12,800.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,905.76 : 47,855.28 = 8,534.56 : x
  2. Step 2: Convert to fraction form
    31,905.76/47,855.28 = 8,534.56/x
  3. Step 3: Cross multiply
    31,905.76x = 47,855.28 × 8,534.56
  4. Step 4: Simplify right side
    31,905.76x = 408,423,758.48
  5. Step 5: Solve for x
    x = 408,423,758.48/31,905.76
  6. Step 6: Final answer
    x = 12,800.94

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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.