Home / 15,351.40-21,183.72-8,635.70

Finding the Fourth Proportional to 15,351.40, 21,183.72 and 8,635.70

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Solution

The fourth proportional to 15,351.40, 21,183.72 and 8,635.70 is: 11,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.40 : 21,183.72 = 8,635.70 : x
  2. Step 2: Convert to fraction form
    15,351.40/21,183.72 = 8,635.70/x
  3. Step 3: Cross multiply
    15,351.40x = 21,183.72 × 8,635.70
  4. Step 4: Simplify right side
    15,351.40x = 182,936,250.80
  5. Step 5: Solve for x
    x = 182,936,250.80/15,351.40
  6. Step 6: Final answer
    x = 11,916.58

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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.