Home / 10,128.08-15,189.12-3,553.04

Finding the Fourth Proportional to 10,128.08, 15,189.12 and 3,553.04

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Solution

The fourth proportional to 10,128.08, 15,189.12 and 3,553.04 is: 5,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.08 : 15,189.12 = 3,553.04 : x
  2. Step 2: Convert to fraction form
    10,128.08/15,189.12 = 3,553.04/x
  3. Step 3: Cross multiply
    10,128.08x = 15,189.12 × 3,553.04
  4. Step 4: Simplify right side
    10,128.08x = 53,967,550.92
  5. Step 5: Solve for x
    x = 53,967,550.92/10,128.08
  6. Step 6: Final answer
    x = 5,328.51

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Double scale
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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.