Home / 20,488.96-28,277.58-11,540.08

Finding the Fourth Proportional to 20,488.96, 28,277.58 and 11,540.08

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Solution

The fourth proportional to 20,488.96, 28,277.58 and 11,540.08 is: 15,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.96 : 28,277.58 = 11,540.08 : x
  2. Step 2: Convert to fraction form
    20,488.96/28,277.58 = 11,540.08/x
  3. Step 3: Cross multiply
    20,488.96x = 28,277.58 × 11,540.08
  4. Step 4: Simplify right side
    20,488.96x = 326,325,535.41
  5. Step 5: Solve for x
    x = 326,325,535.41/20,488.96
  6. Step 6: Final answer
    x = 15,926.90

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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.