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Finding the Fourth Proportional to 18,144.88, 25,040.32 and 10,187.84

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Solution

The fourth proportional to 18,144.88, 25,040.32 and 10,187.84 is: 14,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144.88 : 25,040.32 = 10,187.84 : x
  2. Step 2: Convert to fraction form
    18,144.88/25,040.32 = 10,187.84/x
  3. Step 3: Cross multiply
    18,144.88x = 25,040.32 × 10,187.84
  4. Step 4: Simplify right side
    18,144.88x = 255,106,773.71
  5. Step 5: Solve for x
    x = 255,106,773.71/18,144.88
  6. Step 6: Final answer
    x = 14,059.44

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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.