Home / 20,047.72-30,072.40-8,952.34

Finding the Fourth Proportional to 20,047.72, 30,072.40 and 8,952.34

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Solution

The fourth proportional to 20,047.72, 30,072.40 and 8,952.34 is: 13,428.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.72 : 30,072.40 = 8,952.34 : x
  2. Step 2: Convert to fraction form
    20,047.72/30,072.40 = 8,952.34/x
  3. Step 3: Cross multiply
    20,047.72x = 30,072.40 × 8,952.34
  4. Step 4: Simplify right side
    20,047.72x = 269,218,349.42
  5. Step 5: Solve for x
    x = 269,218,349.42/20,047.72
  6. Step 6: Final answer
    x = 13,428.88

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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.