Home / 13,647.83-20,471.75-3,787.12

Finding the Fourth Proportional to 13,647.83, 20,471.75 and 3,787.12

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Solution

The fourth proportional to 13,647.83, 20,471.75 and 3,787.12 is: 5,680.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.83 : 20,471.75 = 3,787.12 : x
  2. Step 2: Convert to fraction form
    13,647.83/20,471.75 = 3,787.12/x
  3. Step 3: Cross multiply
    13,647.83x = 20,471.75 × 3,787.12
  4. Step 4: Simplify right side
    13,647.83x = 77,528,906.56
  5. Step 5: Solve for x
    x = 77,528,906.56/13,647.83
  6. Step 6: Final answer
    x = 5,680.68

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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.