Home / 12,731.11-19,110.63-10,115.43

Finding the Fourth Proportional to 12,731.11, 19,110.63 and 10,115.43

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Solution

The fourth proportional to 12,731.11, 19,110.63 and 10,115.43 is: 15,184.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.11 : 19,110.63 = 10,115.43 : x
  2. Step 2: Convert to fraction form
    12,731.11/19,110.63 = 10,115.43/x
  3. Step 3: Cross multiply
    12,731.11x = 19,110.63 × 10,115.43
  4. Step 4: Simplify right side
    12,731.11x = 193,312,240.02
  5. Step 5: Solve for x
    x = 193,312,240.02/12,731.11
  6. Step 6: Final answer
    x = 15,184.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.