Home / 20,290.23-28,000.42-11,337.64

Finding the Fourth Proportional to 20,290.23, 28,000.42 and 11,337.64

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Solution

The fourth proportional to 20,290.23, 28,000.42 and 11,337.64 is: 15,645.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.23 : 28,000.42 = 11,337.64 : x
  2. Step 2: Convert to fraction form
    20,290.23/28,000.42 = 11,337.64/x
  3. Step 3: Cross multiply
    20,290.23x = 28,000.42 × 11,337.64
  4. Step 4: Simplify right side
    20,290.23x = 317,458,583.46
  5. Step 5: Solve for x
    x = 317,458,583.46/20,290.23
  6. Step 6: Final answer
    x = 15,645.88

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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.