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Finding the Fourth Proportional to 15,525.96, 21,427.65 and 9,153.96

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Solution

The fourth proportional to 15,525.96, 21,427.65 and 9,153.96 is: 12,633.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.96 : 21,427.65 = 9,153.96 : x
  2. Step 2: Convert to fraction form
    15,525.96/21,427.65 = 9,153.96/x
  3. Step 3: Cross multiply
    15,525.96x = 21,427.65 × 9,153.96
  4. Step 4: Simplify right side
    15,525.96x = 196,147,850.99
  5. Step 5: Solve for x
    x = 196,147,850.99/15,525.96
  6. Step 6: Final answer
    x = 12,633.54

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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.