Home / 19,731.24-27,228.29-10,778.72

Finding the Fourth Proportional to 19,731.24, 27,228.29 and 10,778.72

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Solution

The fourth proportional to 19,731.24, 27,228.29 and 10,778.72 is: 14,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.24 : 27,228.29 = 10,778.72 : x
  2. Step 2: Convert to fraction form
    19,731.24/27,228.29 = 10,778.72/x
  3. Step 3: Cross multiply
    19,731.24x = 27,228.29 × 10,778.72
  4. Step 4: Simplify right side
    19,731.24x = 293,485,923.95
  5. Step 5: Solve for x
    x = 293,485,923.95/19,731.24
  6. Step 6: Final answer
    x = 14,874.18

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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.