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Finding the Fourth Proportional to 18,134.88, 25,028.86 and 11,065.40

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Solution

The fourth proportional to 18,134.88, 25,028.86 and 11,065.40 is: 15,271.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,134.88 : 25,028.86 = 11,065.40 : x
  2. Step 2: Convert to fraction form
    18,134.88/25,028.86 = 11,065.40/x
  3. Step 3: Cross multiply
    18,134.88x = 25,028.86 × 11,065.40
  4. Step 4: Simplify right side
    18,134.88x = 276,954,347.44
  5. Step 5: Solve for x
    x = 276,954,347.44/18,134.88
  6. Step 6: Final answer
    x = 15,271.92

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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.