Home / 31,864.38-47,789.07-13,125.84

Finding the Fourth Proportional to 31,864.38, 47,789.07 and 13,125.84

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Solution

The fourth proportional to 31,864.38, 47,789.07 and 13,125.84 is: 19,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,864.38 : 47,789.07 = 13,125.84 : x
  2. Step 2: Convert to fraction form
    31,864.38/47,789.07 = 13,125.84/x
  3. Step 3: Cross multiply
    31,864.38x = 47,789.07 × 13,125.84
  4. Step 4: Simplify right side
    31,864.38x = 627,271,686.57
  5. Step 5: Solve for x
    x = 627,271,686.57/31,864.38
  6. Step 6: Final answer
    x = 19,685.67

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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.