Home / 15,538.36-21,442.28-8,464.84

Finding the Fourth Proportional to 15,538.36, 21,442.28 and 8,464.84

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Solution

The fourth proportional to 15,538.36, 21,442.28 and 8,464.84 is: 11,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.36 : 21,442.28 = 8,464.84 : x
  2. Step 2: Convert to fraction form
    15,538.36/21,442.28 = 8,464.84/x
  3. Step 3: Cross multiply
    15,538.36x = 21,442.28 × 8,464.84
  4. Step 4: Simplify right side
    15,538.36x = 181,505,469.44
  5. Step 5: Solve for x
    x = 181,505,469.44/15,538.36
  6. Step 6: Final answer
    x = 11,681.12

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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.