Home / 20,339.04-28,067-11,140.55

Finding the Fourth Proportional to 20,339.04, 28,067 and 11,140.55

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Solution

The fourth proportional to 20,339.04, 28,067 and 11,140.55 is: 15,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.04 : 28,067 = 11,140.55 : x
  2. Step 2: Convert to fraction form
    20,339.04/28,067 = 11,140.55/x
  3. Step 3: Cross multiply
    20,339.04x = 28,067 × 11,140.55
  4. Step 4: Simplify right side
    20,339.04x = 312,681,816.85
  5. Step 5: Solve for x
    x = 312,681,816.85/20,339.04
  6. Step 6: Final answer
    x = 15,373.48

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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.