Home / 18,729.09-25,839.86-11,655.05

Finding the Fourth Proportional to 18,729.09, 25,839.86 and 11,655.05

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Solution

The fourth proportional to 18,729.09, 25,839.86 and 11,655.05 is: 16,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.09 : 25,839.86 = 11,655.05 : x
  2. Step 2: Convert to fraction form
    18,729.09/25,839.86 = 11,655.05/x
  3. Step 3: Cross multiply
    18,729.09x = 25,839.86 × 11,655.05
  4. Step 4: Simplify right side
    18,729.09x = 301,164,672.82
  5. Step 5: Solve for x
    x = 301,164,672.82/18,729.09
  6. Step 6: Final answer
    x = 16,080.05

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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.