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Finding the Fourth Proportional to 30,222.60, 45,317.70 and 12,672.60

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Solution

The fourth proportional to 30,222.60, 45,317.70 and 12,672.60 is: 19,002.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,222.60 : 45,317.70 = 12,672.60 : x
  2. Step 2: Convert to fraction form
    30,222.60/45,317.70 = 12,672.60/x
  3. Step 3: Cross multiply
    30,222.60x = 45,317.70 × 12,672.60
  4. Step 4: Simplify right side
    30,222.60x = 574,293,085.02
  5. Step 5: Solve for x
    x = 574,293,085.02/30,222.60
  6. Step 6: Final answer
    x = 19,002.11

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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.