Home / 21,357.20-29,468.12-15,326.48

Finding the Fourth Proportional to 21,357.20, 29,468.12 and 15,326.48

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Solution

The fourth proportional to 21,357.20, 29,468.12 and 15,326.48 is: 21,147.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.20 : 29,468.12 = 15,326.48 : x
  2. Step 2: Convert to fraction form
    21,357.20/29,468.12 = 15,326.48/x
  3. Step 3: Cross multiply
    21,357.20x = 29,468.12 × 15,326.48
  4. Step 4: Simplify right side
    21,357.20x = 451,642,551.82
  5. Step 5: Solve for x
    x = 451,642,551.82/21,357.20
  6. Step 6: Final answer
    x = 21,147.09

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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.