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Finding the Fourth Proportional to 37,017.76, 55,520.88 and 12,388

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Solution

The fourth proportional to 37,017.76, 55,520.88 and 12,388 is: 18,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,017.76 : 55,520.88 = 12,388 : x
  2. Step 2: Convert to fraction form
    37,017.76/55,520.88 = 12,388/x
  3. Step 3: Cross multiply
    37,017.76x = 55,520.88 × 12,388
  4. Step 4: Simplify right side
    37,017.76x = 687,792,661.44
  5. Step 5: Solve for x
    x = 687,792,661.44/37,017.76
  6. Step 6: Final answer
    x = 18,580.07

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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.