Home / 15,538.20-21,442.82-8,464.56

Finding the Fourth Proportional to 15,538.20, 21,442.82 and 8,464.56

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Solution

The fourth proportional to 15,538.20, 21,442.82 and 8,464.56 is: 11,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.20 : 21,442.82 = 8,464.56 : x
  2. Step 2: Convert to fraction form
    15,538.20/21,442.82 = 8,464.56/x
  3. Step 3: Cross multiply
    15,538.20x = 21,442.82 × 8,464.56
  4. Step 4: Simplify right side
    15,538.20x = 181,504,036.46
  5. Step 5: Solve for x
    x = 181,504,036.46/15,538.20
  6. Step 6: Final answer
    x = 11,681.15

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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.