Home / 20,313.72-28,034.30-11,362.05

Finding the Fourth Proportional to 20,313.72, 28,034.30 and 11,362.05

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Solution

The fourth proportional to 20,313.72, 28,034.30 and 11,362.05 is: 15,680.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.72 : 28,034.30 = 11,362.05 : x
  2. Step 2: Convert to fraction form
    20,313.72/28,034.30 = 11,362.05/x
  3. Step 3: Cross multiply
    20,313.72x = 28,034.30 × 11,362.05
  4. Step 4: Simplify right side
    20,313.72x = 318,527,146.72
  5. Step 5: Solve for x
    x = 318,527,146.72/20,313.72
  6. Step 6: Final answer
    x = 15,680.39

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Double scale
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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.