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Finding the Fourth Proportional to 18,245.01, 25,156.54 and 12,868.33

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Solution

The fourth proportional to 18,245.01, 25,156.54 and 12,868.33 is: 17,743.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.01 : 25,156.54 = 12,868.33 : x
  2. Step 2: Convert to fraction form
    18,245.01/25,156.54 = 12,868.33/x
  3. Step 3: Cross multiply
    18,245.01x = 25,156.54 × 12,868.33
  4. Step 4: Simplify right side
    18,245.01x = 323,722,515.60
  5. Step 5: Solve for x
    x = 323,722,515.60/18,245.01
  6. Step 6: Final answer
    x = 17,743.08

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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.