Home / 28,972.96-39,979.92-23,019.04

Finding the Fourth Proportional to 28,972.96, 39,979.92 and 23,019.04

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Solution

The fourth proportional to 28,972.96, 39,979.92 and 23,019.04 is: 31,764.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.96 : 39,979.92 = 23,019.04 : x
  2. Step 2: Convert to fraction form
    28,972.96/39,979.92 = 23,019.04/x
  3. Step 3: Cross multiply
    28,972.96x = 39,979.92 × 23,019.04
  4. Step 4: Simplify right side
    28,972.96x = 920,299,377.68
  5. Step 5: Solve for x
    x = 920,299,377.68/28,972.96
  6. Step 6: Final answer
    x = 31,764.08

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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.