Home / 27,655.78-38,165.01-15,080.53

Finding the Fourth Proportional to 27,655.78, 38,165.01 and 15,080.53

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Solution

The fourth proportional to 27,655.78, 38,165.01 and 15,080.53 is: 20,811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,655.78 : 38,165.01 = 15,080.53 : x
  2. Step 2: Convert to fraction form
    27,655.78/38,165.01 = 15,080.53/x
  3. Step 3: Cross multiply
    27,655.78x = 38,165.01 × 15,080.53
  4. Step 4: Simplify right side
    27,655.78x = 575,548,578.26
  5. Step 5: Solve for x
    x = 575,548,578.26/27,655.78
  6. Step 6: Final answer
    x = 20,811.15

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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.