Home / 27,786.08-38,340.60-15,687.92

Finding the Fourth Proportional to 27,786.08, 38,340.60 and 15,687.92

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Solution

The fourth proportional to 27,786.08, 38,340.60 and 15,687.92 is: 21,646.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,786.08 : 38,340.60 = 15,687.92 : x
  2. Step 2: Convert to fraction form
    27,786.08/38,340.60 = 15,687.92/x
  3. Step 3: Cross multiply
    27,786.08x = 38,340.60 × 15,687.92
  4. Step 4: Simplify right side
    27,786.08x = 601,484,265.55
  5. Step 5: Solve for x
    x = 601,484,265.55/27,786.08
  6. Step 6: Final answer
    x = 21,646.96

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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.