Home / 18,853.31-25,999.25-12,734.47

Finding the Fourth Proportional to 18,853.31, 25,999.25 and 12,734.47

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Solution

The fourth proportional to 18,853.31, 25,999.25 and 12,734.47 is: 17,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.31 : 25,999.25 = 12,734.47 : x
  2. Step 2: Convert to fraction form
    18,853.31/25,999.25 = 12,734.47/x
  3. Step 3: Cross multiply
    18,853.31x = 25,999.25 × 12,734.47
  4. Step 4: Simplify right side
    18,853.31x = 331,086,599.18
  5. Step 5: Solve for x
    x = 331,086,599.18/18,853.31
  6. Step 6: Final answer
    x = 17,561.20

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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.