Home / 20,348.10-28,079.72-11,273.09

Finding the Fourth Proportional to 20,348.10, 28,079.72 and 11,273.09

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Solution

The fourth proportional to 20,348.10, 28,079.72 and 11,273.09 is: 15,556.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.10 : 28,079.72 = 11,273.09 : x
  2. Step 2: Convert to fraction form
    20,348.10/28,079.72 = 11,273.09/x
  3. Step 3: Cross multiply
    20,348.10x = 28,079.72 × 11,273.09
  4. Step 4: Simplify right side
    20,348.10x = 316,545,070.34
  5. Step 5: Solve for x
    x = 316,545,070.34/20,348.10
  6. Step 6: Final answer
    x = 15,556.49

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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.