Home / 15,538.32-21,442.68-8,464.68

Finding the Fourth Proportional to 15,538.32, 21,442.68 and 8,464.68

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Solution

The fourth proportional to 15,538.32, 21,442.68 and 8,464.68 is: 11,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.32 : 21,442.68 = 8,464.68 : x
  2. Step 2: Convert to fraction form
    15,538.32/21,442.68 = 8,464.68/x
  3. Step 3: Cross multiply
    15,538.32x = 21,442.68 × 8,464.68
  4. Step 4: Simplify right side
    15,538.32x = 181,505,424.54
  5. Step 5: Solve for x
    x = 181,505,424.54/15,538.32
  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.