Home / 27,690.28-38,212.49-15,115.03

Finding the Fourth Proportional to 27,690.28, 38,212.49 and 15,115.03

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Solution

The fourth proportional to 27,690.28, 38,212.49 and 15,115.03 is: 20,858.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.28 : 38,212.49 = 15,115.03 : x
  2. Step 2: Convert to fraction form
    27,690.28/38,212.49 = 15,115.03/x
  3. Step 3: Cross multiply
    27,690.28x = 38,212.49 × 15,115.03
  4. Step 4: Simplify right side
    27,690.28x = 577,582,874.98
  5. Step 5: Solve for x
    x = 577,582,874.98/27,690.28
  6. Step 6: Final answer
    x = 20,858.69

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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.