Home / 18,305.47-25,261.70-9,921.97

Finding the Fourth Proportional to 18,305.47, 25,261.70 and 9,921.97

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Solution

The fourth proportional to 18,305.47, 25,261.70 and 9,921.97 is: 13,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.47 : 25,261.70 = 9,921.97 : x
  2. Step 2: Convert to fraction form
    18,305.47/25,261.70 = 9,921.97/x
  3. Step 3: Cross multiply
    18,305.47x = 25,261.70 × 9,921.97
  4. Step 4: Simplify right side
    18,305.47x = 250,645,829.55
  5. Step 5: Solve for x
    x = 250,645,829.55/18,305.47
  6. Step 6: Final answer
    x = 13,692.40

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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.