Home / 20,748.12-28,632.06-11,316.12

Finding the Fourth Proportional to 20,748.12, 28,632.06 and 11,316.12

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Solution

The fourth proportional to 20,748.12, 28,632.06 and 11,316.12 is: 15,616.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.12 : 28,632.06 = 11,316.12 : x
  2. Step 2: Convert to fraction form
    20,748.12/28,632.06 = 11,316.12/x
  3. Step 3: Cross multiply
    20,748.12x = 28,632.06 × 11,316.12
  4. Step 4: Simplify right side
    20,748.12x = 324,003,826.81
  5. Step 5: Solve for x
    x = 324,003,826.81/20,748.12
  6. Step 6: Final answer
    x = 15,616.06

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Similar ratio
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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.