Home / 18,645.12-25,729.85-10,147.28

Finding the Fourth Proportional to 18,645.12, 25,729.85 and 10,147.28

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Solution

The fourth proportional to 18,645.12, 25,729.85 and 10,147.28 is: 14,003.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.12 : 25,729.85 = 10,147.28 : x
  2. Step 2: Convert to fraction form
    18,645.12/25,729.85 = 10,147.28/x
  3. Step 3: Cross multiply
    18,645.12x = 25,729.85 × 10,147.28
  4. Step 4: Simplify right side
    18,645.12x = 261,087,812.92
  5. Step 5: Solve for x
    x = 261,087,812.92/18,645.12
  6. Step 6: Final answer
    x = 14,003.01

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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.