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Finding the Fourth Proportional to 15,334.44, 21,160.48 and 8,621.11

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Solution

The fourth proportional to 15,334.44, 21,160.48 and 8,621.11 is: 11,896.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,334.44 : 21,160.48 = 8,621.11 : x
  2. Step 2: Convert to fraction form
    15,334.44/21,160.48 = 8,621.11/x
  3. Step 3: Cross multiply
    15,334.44x = 21,160.48 × 8,621.11
  4. Step 4: Simplify right side
    15,334.44x = 182,426,775.16
  5. Step 5: Solve for x
    x = 182,426,775.16/15,334.44
  6. Step 6: Final answer
    x = 11,896.54

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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.