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Finding the Fourth Proportional to 18,865.25, 26,008.03 and 15,049.84

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Solution

The fourth proportional to 18,865.25, 26,008.03 and 15,049.84 is: 20,748.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.25 : 26,008.03 = 15,049.84 : x
  2. Step 2: Convert to fraction form
    18,865.25/26,008.03 = 15,049.84/x
  3. Step 3: Cross multiply
    18,865.25x = 26,008.03 × 15,049.84
  4. Step 4: Simplify right side
    18,865.25x = 391,416,690.22
  5. Step 5: Solve for x
    x = 391,416,690.22/18,865.25
  6. Step 6: Final answer
    x = 20,748.03

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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.