Home / 27,686.32-38,207.52-15,110.80

Finding the Fourth Proportional to 27,686.32, 38,207.52 and 15,110.80

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Solution

The fourth proportional to 27,686.32, 38,207.52 and 15,110.80 is: 20,853.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,686.32 : 38,207.52 = 15,110.80 : x
  2. Step 2: Convert to fraction form
    27,686.32/38,207.52 = 15,110.80/x
  3. Step 3: Cross multiply
    27,686.32x = 38,207.52 × 15,110.80
  4. Step 4: Simplify right side
    27,686.32x = 577,346,193.22
  5. Step 5: Solve for x
    x = 577,346,193.22/27,686.32
  6. Step 6: Final answer
    x = 20,853.12

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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.