Home / 10,189.92-15,279.84-3,615.12

Finding the Fourth Proportional to 10,189.92, 15,279.84 and 3,615.12

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Solution

The fourth proportional to 10,189.92, 15,279.84 and 3,615.12 is: 5,420.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,189.92 : 15,279.84 = 3,615.12 : x
  2. Step 2: Convert to fraction form
    10,189.92/15,279.84 = 3,615.12/x
  3. Step 3: Cross multiply
    10,189.92x = 15,279.84 × 3,615.12
  4. Step 4: Simplify right side
    10,189.92x = 55,238,455.18
  5. Step 5: Solve for x
    x = 55,238,455.18/10,189.92
  6. Step 6: Final answer
    x = 5,420.89

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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.