Home / 21,983.36-32,979.20-7,191.04

Finding the Fourth Proportional to 21,983.36, 32,979.20 and 7,191.04

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Solution

The fourth proportional to 21,983.36, 32,979.20 and 7,191.04 is: 10,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.36 : 32,979.20 = 7,191.04 : x
  2. Step 2: Convert to fraction form
    21,983.36/32,979.20 = 7,191.04/x
  3. Step 3: Cross multiply
    21,983.36x = 32,979.20 × 7,191.04
  4. Step 4: Simplify right side
    21,983.36x = 237,154,746.37
  5. Step 5: Solve for x
    x = 237,154,746.37/21,983.36
  6. Step 6: Final answer
    x = 10,787.92

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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.