Home / 18,921.12-26,115.66-10,967.73

Finding the Fourth Proportional to 18,921.12, 26,115.66 and 10,967.73

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Solution

The fourth proportional to 18,921.12, 26,115.66 and 10,967.73 is: 15,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.12 : 26,115.66 = 10,967.73 : x
  2. Step 2: Convert to fraction form
    18,921.12/26,115.66 = 10,967.73/x
  3. Step 3: Cross multiply
    18,921.12x = 26,115.66 × 10,967.73
  4. Step 4: Simplify right side
    18,921.12x = 286,429,507.65
  5. Step 5: Solve for x
    x = 286,429,507.65/18,921.12
  6. Step 6: Final answer
    x = 15,138.08

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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.