Home / 19,731.09-27,228.92-10,778.61

Finding the Fourth Proportional to 19,731.09, 27,228.92 and 10,778.61

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Solution

The fourth proportional to 19,731.09, 27,228.92 and 10,778.61 is: 14,874.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.09 : 27,228.92 = 10,778.61 : x
  2. Step 2: Convert to fraction form
    19,731.09/27,228.92 = 10,778.61/x
  3. Step 3: Cross multiply
    19,731.09x = 27,228.92 × 10,778.61
  4. Step 4: Simplify right side
    19,731.09x = 293,489,909.40
  5. Step 5: Solve for x
    x = 293,489,909.40/19,731.09
  6. Step 6: Final answer
    x = 14,874.49

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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.