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Finding the Fourth Proportional to 15,067.68, 20,810.42 and 10,279.40

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Solution

The fourth proportional to 15,067.68, 20,810.42 and 10,279.40 is: 14,197.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,067.68 : 20,810.42 = 10,279.40 : x
  2. Step 2: Convert to fraction form
    15,067.68/20,810.42 = 10,279.40/x
  3. Step 3: Cross multiply
    15,067.68x = 20,810.42 × 10,279.40
  4. Step 4: Simplify right side
    15,067.68x = 213,918,709.07
  5. Step 5: Solve for x
    x = 213,918,709.07/15,067.68
  6. Step 6: Final answer
    x = 14,197.19

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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.