Home / 31,118.97-42,942.46-17,688.36

Finding the Fourth Proportional to 31,118.97, 42,942.46 and 17,688.36

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Solution

The fourth proportional to 31,118.97, 42,942.46 and 17,688.36 is: 24,408.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.97 : 42,942.46 = 17,688.36 : x
  2. Step 2: Convert to fraction form
    31,118.97/42,942.46 = 17,688.36/x
  3. Step 3: Cross multiply
    31,118.97x = 42,942.46 × 17,688.36
  4. Step 4: Simplify right side
    31,118.97x = 759,581,691.77
  5. Step 5: Solve for x
    x = 759,581,691.77/31,118.97
  6. Step 6: Final answer
    x = 24,408.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.