Home / 13,151.66-18,111.06-11,426.15

Finding the Fourth Proportional to 13,151.66, 18,111.06 and 11,426.15

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Solution

The fourth proportional to 13,151.66, 18,111.06 and 11,426.15 is: 15,734.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.66 : 18,111.06 = 11,426.15 : x
  2. Step 2: Convert to fraction form
    13,151.66/18,111.06 = 11,426.15/x
  3. Step 3: Cross multiply
    13,151.66x = 18,111.06 × 11,426.15
  4. Step 4: Simplify right side
    13,151.66x = 206,939,650.42
  5. Step 5: Solve for x
    x = 206,939,650.42/13,151.66
  6. Step 6: Final answer
    x = 15,734.88

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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.