Home / 15,515.25-21,410.94-8,441.70

Finding the Fourth Proportional to 15,515.25, 21,410.94 and 8,441.70

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Solution

The fourth proportional to 15,515.25, 21,410.94 and 8,441.70 is: 11,649.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.25 : 21,410.94 = 8,441.70 : x
  2. Step 2: Convert to fraction form
    15,515.25/21,410.94 = 8,441.70/x
  3. Step 3: Cross multiply
    15,515.25x = 21,410.94 × 8,441.70
  4. Step 4: Simplify right side
    15,515.25x = 180,744,732.20
  5. Step 5: Solve for x
    x = 180,744,732.20/15,515.25
  6. Step 6: Final answer
    x = 11,649.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.