Home / 15,926.96-21,979.73-8,757.18

Finding the Fourth Proportional to 15,926.96, 21,979.73 and 8,757.18

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Solution

The fourth proportional to 15,926.96, 21,979.73 and 8,757.18 is: 12,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,926.96 : 21,979.73 = 8,757.18 : x
  2. Step 2: Convert to fraction form
    15,926.96/21,979.73 = 8,757.18/x
  3. Step 3: Cross multiply
    15,926.96x = 21,979.73 × 8,757.18
  4. Step 4: Simplify right side
    15,926.96x = 192,480,473.85
  5. Step 5: Solve for x
    x = 192,480,473.85/15,926.96
  6. Step 6: Final answer
    x = 12,085.20

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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.