Home / 31,381.02-43,305.33-17,955.57

Finding the Fourth Proportional to 31,381.02, 43,305.33 and 17,955.57

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Solution

The fourth proportional to 31,381.02, 43,305.33 and 17,955.57 is: 24,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,381.02 : 43,305.33 = 17,955.57 : x
  2. Step 2: Convert to fraction form
    31,381.02/43,305.33 = 17,955.57/x
  3. Step 3: Cross multiply
    31,381.02x = 43,305.33 × 17,955.57
  4. Step 4: Simplify right side
    31,381.02x = 777,572,113.92
  5. Step 5: Solve for x
    x = 777,572,113.92/31,381.02
  6. Step 6: Final answer
    x = 24,778.42

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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.