Home / 28,561.92-39,412.80-15,982.08

Finding the Fourth Proportional to 28,561.92, 39,412.80 and 15,982.08

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Solution

The fourth proportional to 28,561.92, 39,412.80 and 15,982.08 is: 22,053.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.92 : 39,412.80 = 15,982.08 : x
  2. Step 2: Convert to fraction form
    28,561.92/39,412.80 = 15,982.08/x
  3. Step 3: Cross multiply
    28,561.92x = 39,412.80 × 15,982.08
  4. Step 4: Simplify right side
    28,561.92x = 629,898,522.62
  5. Step 5: Solve for x
    x = 629,898,522.62/28,561.92
  6. Step 6: Final answer
    x = 22,053.79

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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.