Home / 31,395.49-43,306.56-18,640.02

Finding the Fourth Proportional to 31,395.49, 43,306.56 and 18,640.02

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Solution

The fourth proportional to 31,395.49, 43,306.56 and 18,640.02 is: 25,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,395.49 : 43,306.56 = 18,640.02 : x
  2. Step 2: Convert to fraction form
    31,395.49/43,306.56 = 18,640.02/x
  3. Step 3: Cross multiply
    31,395.49x = 43,306.56 × 18,640.02
  4. Step 4: Simplify right side
    31,395.49x = 807,235,144.53
  5. Step 5: Solve for x
    x = 807,235,144.53/31,395.49
  6. Step 6: Final answer
    x = 25,711.82

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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.