Home / 27,690.03-38,212.15-15,114.78

Finding the Fourth Proportional to 27,690.03, 38,212.15 and 15,114.78

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Solution

The fourth proportional to 27,690.03, 38,212.15 and 15,114.78 is: 20,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.03 : 38,212.15 = 15,114.78 : x
  2. Step 2: Convert to fraction form
    27,690.03/38,212.15 = 15,114.78/x
  3. Step 3: Cross multiply
    27,690.03x = 38,212.15 × 15,114.78
  4. Step 4: Simplify right side
    27,690.03x = 577,568,240.58
  5. Step 5: Solve for x
    x = 577,568,240.58/27,690.03
  6. Step 6: Final answer
    x = 20,858.35

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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.