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Finding the Fourth Proportional to 20,228.70, 30,337.65 and 6,188.70

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Solution

The fourth proportional to 20,228.70, 30,337.65 and 6,188.70 is: 9,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.70 : 30,337.65 = 6,188.70 : x
  2. Step 2: Convert to fraction form
    20,228.70/30,337.65 = 6,188.70/x
  3. Step 3: Cross multiply
    20,228.70x = 30,337.65 × 6,188.70
  4. Step 4: Simplify right side
    20,228.70x = 187,750,614.56
  5. Step 5: Solve for x
    x = 187,750,614.56/20,228.70
  6. Step 6: Final answer
    x = 9,281.40

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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.