Home / 10,103.23-15,138.13-5,166.08

Finding the Fourth Proportional to 10,103.23, 15,138.13 and 5,166.08

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Solution

The fourth proportional to 10,103.23, 15,138.13 and 5,166.08 is: 7,740.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.23 : 15,138.13 = 5,166.08 : x
  2. Step 2: Convert to fraction form
    10,103.23/15,138.13 = 5,166.08/x
  3. Step 3: Cross multiply
    10,103.23x = 15,138.13 × 5,166.08
  4. Step 4: Simplify right side
    10,103.23x = 78,204,714.94
  5. Step 5: Solve for x
    x = 78,204,714.94/10,103.23
  6. Step 6: Final answer
    x = 7,740.57

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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.