Home / 21,979.52-32,966.40-8,118.08

Finding the Fourth Proportional to 21,979.52, 32,966.40 and 8,118.08

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Solution

The fourth proportional to 21,979.52, 32,966.40 and 8,118.08 is: 12,176.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.52 : 32,966.40 = 8,118.08 : x
  2. Step 2: Convert to fraction form
    21,979.52/32,966.40 = 8,118.08/x
  3. Step 3: Cross multiply
    21,979.52x = 32,966.40 × 8,118.08
  4. Step 4: Simplify right side
    21,979.52x = 267,623,872.51
  5. Step 5: Solve for x
    x = 267,623,872.51/21,979.52
  6. Step 6: Final answer
    x = 12,176.06

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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.