Home / 31,359.71-43,262.28-18,613.43

Finding the Fourth Proportional to 31,359.71, 43,262.28 and 18,613.43

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Solution

The fourth proportional to 31,359.71, 43,262.28 and 18,613.43 is: 25,678.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,359.71 : 43,262.28 = 18,613.43 : x
  2. Step 2: Convert to fraction form
    31,359.71/43,262.28 = 18,613.43/x
  3. Step 3: Cross multiply
    31,359.71x = 43,262.28 × 18,613.43
  4. Step 4: Simplify right side
    31,359.71x = 805,259,204.11
  5. Step 5: Solve for x
    x = 805,259,204.11/31,359.71
  6. Step 6: Final answer
    x = 25,678.15

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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.