Home / 27,719.40-38,253.66-15,144.15

Finding the Fourth Proportional to 27,719.40, 38,253.66 and 15,144.15

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Solution

The fourth proportional to 27,719.40, 38,253.66 and 15,144.15 is: 20,899.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,719.40 : 38,253.66 = 15,144.15 : x
  2. Step 2: Convert to fraction form
    27,719.40/38,253.66 = 15,144.15/x
  3. Step 3: Cross multiply
    27,719.40x = 38,253.66 × 15,144.15
  4. Step 4: Simplify right side
    27,719.40x = 579,319,165.09
  5. Step 5: Solve for x
    x = 579,319,165.09/27,719.40
  6. Step 6: Final answer
    x = 20,899.41

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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.