Home / 31,905.12-47,863.50-9,715.98

Finding the Fourth Proportional to 31,905.12, 47,863.50 and 9,715.98

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Solution

The fourth proportional to 31,905.12, 47,863.50 and 9,715.98 is: 14,575.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,905.12 : 47,863.50 = 9,715.98 : x
  2. Step 2: Convert to fraction form
    31,905.12/47,863.50 = 9,715.98/x
  3. Step 3: Cross multiply
    31,905.12x = 47,863.50 × 9,715.98
  4. Step 4: Simplify right side
    31,905.12x = 465,040,808.73
  5. Step 5: Solve for x
    x = 465,040,808.73/31,905.12
  6. Step 6: Final answer
    x = 14,575.74

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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.