Home / 31,738.05-43,803.12-18,306.63

Finding the Fourth Proportional to 31,738.05, 43,803.12 and 18,306.63

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Solution

The fourth proportional to 31,738.05, 43,803.12 and 18,306.63 is: 25,265.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,738.05 : 43,803.12 = 18,306.63 : x
  2. Step 2: Convert to fraction form
    31,738.05/43,803.12 = 18,306.63/x
  3. Step 3: Cross multiply
    31,738.05x = 43,803.12 × 18,306.63
  4. Step 4: Simplify right side
    31,738.05x = 801,887,510.69
  5. Step 5: Solve for x
    x = 801,887,510.69/31,738.05
  6. Step 6: Final answer
    x = 25,265.81

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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.