Home / 12,356.70-18,541.20-5,787.60

Finding the Fourth Proportional to 12,356.70, 18,541.20 and 5,787.60

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Solution

The fourth proportional to 12,356.70, 18,541.20 and 5,787.60 is: 8,684.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.70 : 18,541.20 = 5,787.60 : x
  2. Step 2: Convert to fraction form
    12,356.70/18,541.20 = 5,787.60/x
  3. Step 3: Cross multiply
    12,356.70x = 18,541.20 × 5,787.60
  4. Step 4: Simplify right side
    12,356.70x = 107,309,049.12
  5. Step 5: Solve for x
    x = 107,309,049.12/12,356.70
  6. Step 6: Final answer
    x = 8,684.28

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1.5x scale

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.