Home / 13,685.54-20,545.32-13,622.36

Finding the Fourth Proportional to 13,685.54, 20,545.32 and 13,622.36

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Solution

The fourth proportional to 13,685.54, 20,545.32 and 13,622.36 is: 20,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.54 : 20,545.32 = 13,622.36 : x
  2. Step 2: Convert to fraction form
    13,685.54/20,545.32 = 13,622.36/x
  3. Step 3: Cross multiply
    13,685.54x = 20,545.32 × 13,622.36
  4. Step 4: Simplify right side
    13,685.54x = 279,875,745.36
  5. Step 5: Solve for x
    x = 279,875,745.36/13,685.54
  6. Step 6: Final answer
    x = 20,450.47

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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.