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Finding the Fourth Proportional to 40,340.53, 60,510.95 and 12,638.53

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Solution

The fourth proportional to 40,340.53, 60,510.95 and 12,638.53 is: 18,957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,340.53 : 60,510.95 = 12,638.53 : x
  2. Step 2: Convert to fraction form
    40,340.53/60,510.95 = 12,638.53/x
  3. Step 3: Cross multiply
    40,340.53x = 60,510.95 × 12,638.53
  4. Step 4: Simplify right side
    40,340.53x = 764,769,516.74
  5. Step 5: Solve for x
    x = 764,769,516.74/40,340.53
  6. Step 6: Final answer
    x = 18,957.84

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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.