Home / 20,860.11-28,786.98-11,300.02

Finding the Fourth Proportional to 20,860.11, 28,786.98 and 11,300.02

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Solution

The fourth proportional to 20,860.11, 28,786.98 and 11,300.02 is: 15,594.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.11 : 28,786.98 = 11,300.02 : x
  2. Step 2: Convert to fraction form
    20,860.11/28,786.98 = 11,300.02/x
  3. Step 3: Cross multiply
    20,860.11x = 28,786.98 × 11,300.02
  4. Step 4: Simplify right side
    20,860.11x = 325,293,449.74
  5. Step 5: Solve for x
    x = 325,293,449.74/20,860.11
  6. Step 6: Final answer
    x = 15,594.04

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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.