Home / 20,330.56-30,471.54-11,553.40

Finding the Fourth Proportional to 20,330.56, 30,471.54 and 11,553.40

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Solution

The fourth proportional to 20,330.56, 30,471.54 and 11,553.40 is: 17,316.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.56 : 30,471.54 = 11,553.40 : x
  2. Step 2: Convert to fraction form
    20,330.56/30,471.54 = 11,553.40/x
  3. Step 3: Cross multiply
    20,330.56x = 30,471.54 × 11,553.40
  4. Step 4: Simplify right side
    20,330.56x = 352,049,890.24
  5. Step 5: Solve for x
    x = 352,049,890.24/20,330.56
  6. Step 6: Final answer
    x = 17,316.29

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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.