Home / 31,589.31-47,142.20-28,219.73

Finding the Fourth Proportional to 31,589.31, 47,142.20 and 28,219.73

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Solution

The fourth proportional to 31,589.31, 47,142.20 and 28,219.73 is: 42,113.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,589.31 : 47,142.20 = 28,219.73 : x
  2. Step 2: Convert to fraction form
    31,589.31/47,142.20 = 28,219.73/x
  3. Step 3: Cross multiply
    31,589.31x = 47,142.20 × 28,219.73
  4. Step 4: Simplify right side
    31,589.31x = 1,330,339,980.55
  5. Step 5: Solve for x
    x = 1,330,339,980.55/31,589.31
  6. Step 6: Final answer
    x = 42,113.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.