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Finding the Fourth Proportional to 30,212.60, 45,308.03 and 11,487.65

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Solution

The fourth proportional to 30,212.60, 45,308.03 and 11,487.65 is: 17,227.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.60 : 45,308.03 = 11,487.65 : x
  2. Step 2: Convert to fraction form
    30,212.60/45,308.03 = 11,487.65/x
  3. Step 3: Cross multiply
    30,212.60x = 45,308.03 × 11,487.65
  4. Step 4: Simplify right side
    30,212.60x = 520,482,506.85
  5. Step 5: Solve for x
    x = 520,482,506.85/30,212.60
  6. Step 6: Final answer
    x = 17,227.34

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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.