Home / 31,474.46-47,188.10-18,991.53

Finding the Fourth Proportional to 31,474.46, 47,188.10 and 18,991.53

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Solution

The fourth proportional to 31,474.46, 47,188.10 and 18,991.53 is: 28,473.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.46 : 47,188.10 = 18,991.53 : x
  2. Step 2: Convert to fraction form
    31,474.46/47,188.10 = 18,991.53/x
  3. Step 3: Cross multiply
    31,474.46x = 47,188.10 × 18,991.53
  4. Step 4: Simplify right side
    31,474.46x = 896,174,264.27
  5. Step 5: Solve for x
    x = 896,174,264.27/31,474.46
  6. Step 6: Final answer
    x = 28,473.07

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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.