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Finding the Fourth Proportional to 15,236.42, 21,028.20 and 8,522.42

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Solution

The fourth proportional to 15,236.42, 21,028.20 and 8,522.42 is: 11,762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,236.42 : 21,028.20 = 8,522.42 : x
  2. Step 2: Convert to fraction form
    15,236.42/21,028.20 = 8,522.42/x
  3. Step 3: Cross multiply
    15,236.42x = 21,028.20 × 8,522.42
  4. Step 4: Simplify right side
    15,236.42x = 179,211,047.10
  5. Step 5: Solve for x
    x = 179,211,047.10/15,236.42
  6. Step 6: Final answer
    x = 11,762.02

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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.