Home / 31,425.78-43,364.79-17,278.32

Finding the Fourth Proportional to 31,425.78, 43,364.79 and 17,278.32

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Solution

The fourth proportional to 31,425.78, 43,364.79 and 17,278.32 is: 23,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.78 : 43,364.79 = 17,278.32 : x
  2. Step 2: Convert to fraction form
    31,425.78/43,364.79 = 17,278.32/x
  3. Step 3: Cross multiply
    31,425.78x = 43,364.79 × 17,278.32
  4. Step 4: Simplify right side
    31,425.78x = 749,270,718.35
  5. Step 5: Solve for x
    x = 749,270,718.35/31,425.78
  6. Step 6: Final answer
    x = 23,842.55

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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.