Home / 15,395.53-21,245.83-8,321.95

Finding the Fourth Proportional to 15,395.53, 21,245.83 and 8,321.95

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Solution

The fourth proportional to 15,395.53, 21,245.83 and 8,321.95 is: 11,484.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.53 : 21,245.83 = 8,321.95 : x
  2. Step 2: Convert to fraction form
    15,395.53/21,245.83 = 8,321.95/x
  3. Step 3: Cross multiply
    15,395.53x = 21,245.83 × 8,321.95
  4. Step 4: Simplify right side
    15,395.53x = 176,806,734.97
  5. Step 5: Solve for x
    x = 176,806,734.97/15,395.53
  6. Step 6: Final answer
    x = 11,484.29

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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.