Home / 13,689.56-20,551.32-13,626.36

Finding the Fourth Proportional to 13,689.56, 20,551.32 and 13,626.36

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Solution

The fourth proportional to 13,689.56, 20,551.32 and 13,626.36 is: 20,456.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.56 : 20,551.32 = 13,626.36 : x
  2. Step 2: Convert to fraction form
    13,689.56/20,551.32 = 13,626.36/x
  3. Step 3: Cross multiply
    13,689.56x = 20,551.32 × 13,626.36
  4. Step 4: Simplify right side
    13,689.56x = 280,039,684.80
  5. Step 5: Solve for x
    x = 280,039,684.80/13,689.56
  6. Step 6: Final answer
    x = 20,456.44

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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.