Home / 31,118.46-42,941.78-17,687.86

Finding the Fourth Proportional to 31,118.46, 42,941.78 and 17,687.86

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Solution

The fourth proportional to 31,118.46, 42,941.78 and 17,687.86 is: 24,408.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.46 : 42,941.78 = 17,687.86 : x
  2. Step 2: Convert to fraction form
    31,118.46/42,941.78 = 17,687.86/x
  3. Step 3: Cross multiply
    31,118.46x = 42,941.78 × 17,687.86
  4. Step 4: Simplify right side
    31,118.46x = 759,548,192.79
  5. Step 5: Solve for x
    x = 759,548,192.79/31,118.46
  6. Step 6: Final answer
    x = 24,408.28

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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.