Home / 20,458.03-28,222.55-13,287.44

Finding the Fourth Proportional to 20,458.03, 28,222.55 and 13,287.44

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Solution

The fourth proportional to 20,458.03, 28,222.55 and 13,287.44 is: 18,330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.03 : 28,222.55 = 13,287.44 : x
  2. Step 2: Convert to fraction form
    20,458.03/28,222.55 = 13,287.44/x
  3. Step 3: Cross multiply
    20,458.03x = 28,222.55 × 13,287.44
  4. Step 4: Simplify right side
    20,458.03x = 375,005,472.99
  5. Step 5: Solve for x
    x = 375,005,472.99/20,458.03
  6. Step 6: Final answer
    x = 18,330.48

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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.