Home / 15,926.73-21,979.67-8,853

Finding the Fourth Proportional to 15,926.73, 21,979.67 and 8,853

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Solution

The fourth proportional to 15,926.73, 21,979.67 and 8,853 is: 12,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,926.73 : 21,979.67 = 8,853 : x
  2. Step 2: Convert to fraction form
    15,926.73/21,979.67 = 8,853/x
  3. Step 3: Cross multiply
    15,926.73x = 21,979.67 × 8,853
  4. Step 4: Simplify right side
    15,926.73x = 194,585,974.25
  5. Step 5: Solve for x
    x = 194,585,974.25/15,926.73
  6. Step 6: Final answer
    x = 12,217.57

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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.