Home / 31,234.88-43,130.40-22,309.76

Finding the Fourth Proportional to 31,234.88, 43,130.40 and 22,309.76

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Solution

The fourth proportional to 31,234.88, 43,130.40 and 22,309.76 is: 30,806.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,234.88 : 43,130.40 = 22,309.76 : x
  2. Step 2: Convert to fraction form
    31,234.88/43,130.40 = 22,309.76/x
  3. Step 3: Cross multiply
    31,234.88x = 43,130.40 × 22,309.76
  4. Step 4: Simplify right side
    31,234.88x = 962,228,872.70
  5. Step 5: Solve for x
    x = 962,228,872.70/31,234.88
  6. Step 6: Final answer
    x = 30,806.23

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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.