Home / 18,518.10-25,550.91-10,960.65

Finding the Fourth Proportional to 18,518.10, 25,550.91 and 10,960.65

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Solution

The fourth proportional to 18,518.10, 25,550.91 and 10,960.65 is: 15,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.10 : 25,550.91 = 10,960.65 : x
  2. Step 2: Convert to fraction form
    18,518.10/25,550.91 = 10,960.65/x
  3. Step 3: Cross multiply
    18,518.10x = 25,550.91 × 10,960.65
  4. Step 4: Simplify right side
    18,518.10x = 280,054,581.69
  5. Step 5: Solve for x
    x = 280,054,581.69/18,518.10
  6. Step 6: Final answer
    x = 15,123.29

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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.