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Finding the Fourth Proportional to 18,750.12, 25,909.44 and 17,839.20

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Solution

The fourth proportional to 18,750.12, 25,909.44 and 17,839.20 is: 24,650.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.12 : 25,909.44 = 17,839.20 : x
  2. Step 2: Convert to fraction form
    18,750.12/25,909.44 = 17,839.20/x
  3. Step 3: Cross multiply
    18,750.12x = 25,909.44 × 17,839.20
  4. Step 4: Simplify right side
    18,750.12x = 462,203,682.05
  5. Step 5: Solve for x
    x = 462,203,682.05/18,750.12
  6. Step 6: Final answer
    x = 24,650.71

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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.