Home / 15,515.18-21,410.33-8,441.45

Finding the Fourth Proportional to 15,515.18, 21,410.33 and 8,441.45

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Solution

The fourth proportional to 15,515.18, 21,410.33 and 8,441.45 is: 11,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.18 : 21,410.33 = 8,441.45 : x
  2. Step 2: Convert to fraction form
    15,515.18/21,410.33 = 8,441.45/x
  3. Step 3: Cross multiply
    15,515.18x = 21,410.33 × 8,441.45
  4. Step 4: Simplify right side
    15,515.18x = 180,734,161.21
  5. Step 5: Solve for x
    x = 180,734,161.21/15,515.18
  6. Step 6: Final answer
    x = 11,648.86

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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.