Home / 13,561.09-18,713.40-7,591.75

Finding the Fourth Proportional to 13,561.09, 18,713.40 and 7,591.75

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Solution

The fourth proportional to 13,561.09, 18,713.40 and 7,591.75 is: 10,476.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.09 : 18,713.40 = 7,591.75 : x
  2. Step 2: Convert to fraction form
    13,561.09/18,713.40 = 7,591.75/x
  3. Step 3: Cross multiply
    13,561.09x = 18,713.40 × 7,591.75
  4. Step 4: Simplify right side
    13,561.09x = 142,067,454.45
  5. Step 5: Solve for x
    x = 142,067,454.45/13,561.09
  6. Step 6: Final answer
    x = 10,476.11

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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.