Home / 13,639.48-20,426.37-9,243.61

Finding the Fourth Proportional to 13,639.48, 20,426.37 and 9,243.61

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Solution

The fourth proportional to 13,639.48, 20,426.37 and 9,243.61 is: 13,843.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.48 : 20,426.37 = 9,243.61 : x
  2. Step 2: Convert to fraction form
    13,639.48/20,426.37 = 9,243.61/x
  3. Step 3: Cross multiply
    13,639.48x = 20,426.37 × 9,243.61
  4. Step 4: Simplify right side
    13,639.48x = 188,813,398.00
  5. Step 5: Solve for x
    x = 188,813,398.00/13,639.48
  6. Step 6: Final answer
    x = 13,843.15

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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.