Home / 31,426.40-43,367.31-17,279.12

Finding the Fourth Proportional to 31,426.40, 43,367.31 and 17,279.12

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Solution

The fourth proportional to 31,426.40, 43,367.31 and 17,279.12 is: 23,844.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.40 : 43,367.31 = 17,279.12 : x
  2. Step 2: Convert to fraction form
    31,426.40/43,367.31 = 17,279.12/x
  3. Step 3: Cross multiply
    31,426.40x = 43,367.31 × 17,279.12
  4. Step 4: Simplify right side
    31,426.40x = 749,348,953.57
  5. Step 5: Solve for x
    x = 749,348,953.57/31,426.40
  6. Step 6: Final answer
    x = 23,844.57

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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.