Home / 21,352.52-29,464.79-12,398.55

Finding the Fourth Proportional to 21,352.52, 29,464.79 and 12,398.55

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Solution

The fourth proportional to 21,352.52, 29,464.79 and 12,398.55 is: 17,109.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.52 : 29,464.79 = 12,398.55 : x
  2. Step 2: Convert to fraction form
    21,352.52/29,464.79 = 12,398.55/x
  3. Step 3: Cross multiply
    21,352.52x = 29,464.79 × 12,398.55
  4. Step 4: Simplify right side
    21,352.52x = 365,320,610.06
  5. Step 5: Solve for x
    x = 365,320,610.06/21,352.52
  6. Step 6: Final answer
    x = 17,109.02

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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.