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Finding the Fourth Proportional to 40,335.84, 60,509.52 and 12,636

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Solution

The fourth proportional to 40,335.84, 60,509.52 and 12,636 is: 18,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,335.84 : 60,509.52 = 12,636 : x
  2. Step 2: Convert to fraction form
    40,335.84/60,509.52 = 12,636/x
  3. Step 3: Cross multiply
    40,335.84x = 60,509.52 × 12,636
  4. Step 4: Simplify right side
    40,335.84x = 764,598,294.72
  5. Step 5: Solve for x
    x = 764,598,294.72/40,335.84
  6. Step 6: Final answer
    x = 18,955.80

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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.