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Finding the Fourth Proportional to 18,140.58, 25,049.25 and 13,656.60

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Solution

The fourth proportional to 18,140.58, 25,049.25 and 13,656.60 is: 18,857.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.58 : 25,049.25 = 13,656.60 : x
  2. Step 2: Convert to fraction form
    18,140.58/25,049.25 = 13,656.60/x
  3. Step 3: Cross multiply
    18,140.58x = 25,049.25 × 13,656.60
  4. Step 4: Simplify right side
    18,140.58x = 342,087,587.55
  5. Step 5: Solve for x
    x = 342,087,587.55/18,140.58
  6. Step 6: Final answer
    x = 18,857.59

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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.