Home / 21,979.14-32,948.97-7,929.42

Finding the Fourth Proportional to 21,979.14, 32,948.97 and 7,929.42

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Solution

The fourth proportional to 21,979.14, 32,948.97 and 7,929.42 is: 11,887.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.14 : 32,948.97 = 7,929.42 : x
  2. Step 2: Convert to fraction form
    21,979.14/32,948.97 = 7,929.42/x
  3. Step 3: Cross multiply
    21,979.14x = 32,948.97 × 7,929.42
  4. Step 4: Simplify right side
    21,979.14x = 261,266,221.70
  5. Step 5: Solve for x
    x = 261,266,221.70/21,979.14
  6. Step 6: Final answer
    x = 11,887.01

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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.