Home / 19,731.20-27,228.71-10,778.48

Finding the Fourth Proportional to 19,731.20, 27,228.71 and 10,778.48

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Solution

The fourth proportional to 19,731.20, 27,228.71 and 10,778.48 is: 14,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.20 : 27,228.71 = 10,778.48 : x
  2. Step 2: Convert to fraction form
    19,731.20/27,228.71 = 10,778.48/x
  3. Step 3: Cross multiply
    19,731.20x = 27,228.71 × 10,778.48
  4. Step 4: Simplify right side
    19,731.20x = 293,483,996.96
  5. Step 5: Solve for x
    x = 293,483,996.96/19,731.20
  6. Step 6: Final answer
    x = 14,874.11

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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.