Home / 10,042.23-15,072.68-5,115.56

Finding the Fourth Proportional to 10,042.23, 15,072.68 and 5,115.56

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Solution

The fourth proportional to 10,042.23, 15,072.68 and 5,115.56 is: 7,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,042.23 : 15,072.68 = 5,115.56 : x
  2. Step 2: Convert to fraction form
    10,042.23/15,072.68 = 5,115.56/x
  3. Step 3: Cross multiply
    10,042.23x = 15,072.68 × 5,115.56
  4. Step 4: Simplify right side
    10,042.23x = 77,105,249.37
  5. Step 5: Solve for x
    x = 77,105,249.37/10,042.23
  6. Step 6: Final answer
    x = 7,678.10

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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.