Home / 13,640.87-20,461.32-4,281.61

Finding the Fourth Proportional to 13,640.87, 20,461.32 and 4,281.61

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Solution

The fourth proportional to 13,640.87, 20,461.32 and 4,281.61 is: 6,422.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.87 : 20,461.32 = 4,281.61 : x
  2. Step 2: Convert to fraction form
    13,640.87/20,461.32 = 4,281.61/x
  3. Step 3: Cross multiply
    13,640.87x = 20,461.32 × 4,281.61
  4. Step 4: Simplify right side
    13,640.87x = 87,607,392.33
  5. Step 5: Solve for x
    x = 87,607,392.33/13,640.87
  6. Step 6: Final answer
    x = 6,422.42

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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.