Home / 27,686.40-38,206.80-15,110.88

Finding the Fourth Proportional to 27,686.40, 38,206.80 and 15,110.88

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Solution

The fourth proportional to 27,686.40, 38,206.80 and 15,110.88 is: 20,852.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,686.40 : 38,206.80 = 15,110.88 : x
  2. Step 2: Convert to fraction form
    27,686.40/38,206.80 = 15,110.88/x
  3. Step 3: Cross multiply
    27,686.40x = 38,206.80 × 15,110.88
  4. Step 4: Simplify right side
    27,686.40x = 577,338,369.98
  5. Step 5: Solve for x
    x = 577,338,369.98/27,686.40
  6. Step 6: Final answer
    x = 20,852.78

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Half scale
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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.