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Finding the Fourth Proportional to 15,538.08, 21,441.96 and 8,464.08

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Solution

The fourth proportional to 15,538.08, 21,441.96 and 8,464.08 is: 11,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.08 : 21,441.96 = 8,464.08 : x
  2. Step 2: Convert to fraction form
    15,538.08/21,441.96 = 8,464.08/x
  3. Step 3: Cross multiply
    15,538.08x = 21,441.96 × 8,464.08
  4. Step 4: Simplify right side
    15,538.08x = 181,486,464.80
  5. Step 5: Solve for x
    x = 181,486,464.80/15,538.08
  6. Step 6: Final answer
    x = 11,680.11

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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.