Home / 31,440.13-43,387.37-18,864.88

Finding the Fourth Proportional to 31,440.13, 43,387.37 and 18,864.88

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Solution

The fourth proportional to 31,440.13, 43,387.37 and 18,864.88 is: 26,033.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440.13 : 43,387.37 = 18,864.88 : x
  2. Step 2: Convert to fraction form
    31,440.13/43,387.37 = 18,864.88/x
  3. Step 3: Cross multiply
    31,440.13x = 43,387.37 × 18,864.88
  4. Step 4: Simplify right side
    31,440.13x = 818,497,528.57
  5. Step 5: Solve for x
    x = 818,497,528.57/31,440.13
  6. Step 6: Final answer
    x = 26,033.53

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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.