Home / 31,984.32-47,964.96-13,517.76

Finding the Fourth Proportional to 31,984.32, 47,964.96 and 13,517.76

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Solution

The fourth proportional to 31,984.32, 47,964.96 and 13,517.76 is: 20,271.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,984.32 : 47,964.96 = 13,517.76 : x
  2. Step 2: Convert to fraction form
    31,984.32/47,964.96 = 13,517.76/x
  3. Step 3: Cross multiply
    31,984.32x = 47,964.96 × 13,517.76
  4. Step 4: Simplify right side
    31,984.32x = 648,378,817.69
  5. Step 5: Solve for x
    x = 648,378,817.69/31,984.32
  6. Step 6: Final answer
    x = 20,271.77

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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.