Home / 31,347.83-47,037.86-20,825.12

Finding the Fourth Proportional to 31,347.83, 47,037.86 and 20,825.12

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Solution

The fourth proportional to 31,347.83, 47,037.86 and 20,825.12 is: 31,248.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347.83 : 47,037.86 = 20,825.12 : x
  2. Step 2: Convert to fraction form
    31,347.83/47,037.86 = 20,825.12/x
  3. Step 3: Cross multiply
    31,347.83x = 47,037.86 × 20,825.12
  4. Step 4: Simplify right side
    31,347.83x = 979,569,023.16
  5. Step 5: Solve for x
    x = 979,569,023.16/31,347.83
  6. Step 6: Final answer
    x = 31,248.39

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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.