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Finding the Fourth Proportional to 13,610.52, 18,787.20 and 8,583.20

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Solution

The fourth proportional to 13,610.52, 18,787.20 and 8,583.20 is: 11,847.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.52 : 18,787.20 = 8,583.20 : x
  2. Step 2: Convert to fraction form
    13,610.52/18,787.20 = 8,583.20/x
  3. Step 3: Cross multiply
    13,610.52x = 18,787.20 × 8,583.20
  4. Step 4: Simplify right side
    13,610.52x = 161,254,295.04
  5. Step 5: Solve for x
    x = 161,254,295.04/13,610.52
  6. Step 6: Final answer
    x = 11,847.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.