Home / 20,279.07-30,418.68-6,239

Finding the Fourth Proportional to 20,279.07, 30,418.68 and 6,239

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Solution

The fourth proportional to 20,279.07, 30,418.68 and 6,239 is: 9,358.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.07 : 30,418.68 = 6,239 : x
  2. Step 2: Convert to fraction form
    20,279.07/30,418.68 = 6,239/x
  3. Step 3: Cross multiply
    20,279.07x = 30,418.68 × 6,239
  4. Step 4: Simplify right side
    20,279.07x = 189,782,144.52
  5. Step 5: Solve for x
    x = 189,782,144.52/20,279.07
  6. Step 6: Final answer
    x = 9,358.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.