Home / 19,731.11-27,228.49-10,778.66

Finding the Fourth Proportional to 19,731.11, 27,228.49 and 10,778.66

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Solution

The fourth proportional to 19,731.11, 27,228.49 and 10,778.66 is: 14,874.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.11 : 27,228.49 = 10,778.66 : x
  2. Step 2: Convert to fraction form
    19,731.11/27,228.49 = 10,778.66/x
  3. Step 3: Cross multiply
    19,731.11x = 27,228.49 × 10,778.66
  4. Step 4: Simplify right side
    19,731.11x = 293,486,636.02
  5. Step 5: Solve for x
    x = 293,486,636.02/19,731.11
  6. Step 6: Final answer
    x = 14,874.31

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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.