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Finding the Fourth Proportional to 40,403.60, 60,599.64 and 12,698

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Solution

The fourth proportional to 40,403.60, 60,599.64 and 12,698 is: 19,045.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,403.60 : 60,599.64 = 12,698 : x
  2. Step 2: Convert to fraction form
    40,403.60/60,599.64 = 12,698/x
  3. Step 3: Cross multiply
    40,403.60x = 60,599.64 × 12,698
  4. Step 4: Simplify right side
    40,403.60x = 769,494,228.72
  5. Step 5: Solve for x
    x = 769,494,228.72/40,403.60
  6. Step 6: Final answer
    x = 19,045.19

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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.