Home / 15,112.57-20,855.46-8,398.83

Finding the Fourth Proportional to 15,112.57, 20,855.46 and 8,398.83

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Solution

The fourth proportional to 15,112.57, 20,855.46 and 8,398.83 is: 11,590.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.57 : 20,855.46 = 8,398.83 : x
  2. Step 2: Convert to fraction form
    15,112.57/20,855.46 = 8,398.83/x
  3. Step 3: Cross multiply
    15,112.57x = 20,855.46 × 8,398.83
  4. Step 4: Simplify right side
    15,112.57x = 175,161,358.83
  5. Step 5: Solve for x
    x = 175,161,358.83/15,112.57
  6. Step 6: Final answer
    x = 11,590.44

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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.