Home / 31,839.18-43,943.67-18,408.30

Finding the Fourth Proportional to 31,839.18, 43,943.67 and 18,408.30

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Solution

The fourth proportional to 31,839.18, 43,943.67 and 18,408.30 is: 25,406.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.18 : 43,943.67 = 18,408.30 : x
  2. Step 2: Convert to fraction form
    31,839.18/43,943.67 = 18,408.30/x
  3. Step 3: Cross multiply
    31,839.18x = 43,943.67 × 18,408.30
  4. Step 4: Simplify right side
    31,839.18x = 808,928,260.46
  5. Step 5: Solve for x
    x = 808,928,260.46/31,839.18
  6. Step 6: Final answer
    x = 25,406.69

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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.