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Finding the Fourth Proportional to 20,019.60, 30,008.50 and 7,531.02

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Solution

The fourth proportional to 20,019.60, 30,008.50 and 7,531.02 is: 11,288.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,019.60 : 30,008.50 = 7,531.02 : x
  2. Step 2: Convert to fraction form
    20,019.60/30,008.50 = 7,531.02/x
  3. Step 3: Cross multiply
    20,019.60x = 30,008.50 × 7,531.02
  4. Step 4: Simplify right side
    20,019.60x = 225,994,613.67
  5. Step 5: Solve for x
    x = 225,994,613.67/20,019.60
  6. Step 6: Final answer
    x = 11,288.67

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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.