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Finding the Fourth Proportional to 20,253.34, 30,379.83 and 6,402.34

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Solution

The fourth proportional to 20,253.34, 30,379.83 and 6,402.34 is: 9,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.34 : 30,379.83 = 6,402.34 : x
  2. Step 2: Convert to fraction form
    20,253.34/30,379.83 = 6,402.34/x
  3. Step 3: Cross multiply
    20,253.34x = 30,379.83 × 6,402.34
  4. Step 4: Simplify right side
    20,253.34x = 194,502,000.80
  5. Step 5: Solve for x
    x = 194,502,000.80/20,253.34
  6. Step 6: Final answer
    x = 9,603.45

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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.