Home / 31,440.18-43,390.64-18,013.22

Finding the Fourth Proportional to 31,440.18, 43,390.64 and 18,013.22

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Solution

The fourth proportional to 31,440.18, 43,390.64 and 18,013.22 is: 24,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440.18 : 43,390.64 = 18,013.22 : x
  2. Step 2: Convert to fraction form
    31,440.18/43,390.64 = 18,013.22/x
  3. Step 3: Cross multiply
    31,440.18x = 43,390.64 × 18,013.22
  4. Step 4: Simplify right side
    31,440.18x = 781,605,033.73
  5. Step 5: Solve for x
    x = 781,605,033.73/31,440.18
  6. Step 6: Final answer
    x = 24,860.07

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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.