Home / 21,418.38-29,560.14-12,468.60

Finding the Fourth Proportional to 21,418.38, 29,560.14 and 12,468.60

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Solution

The fourth proportional to 21,418.38, 29,560.14 and 12,468.60 is: 17,208.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.38 : 29,560.14 = 12,468.60 : x
  2. Step 2: Convert to fraction form
    21,418.38/29,560.14 = 12,468.60/x
  3. Step 3: Cross multiply
    21,418.38x = 29,560.14 × 12,468.60
  4. Step 4: Simplify right side
    21,418.38x = 368,573,561.60
  5. Step 5: Solve for x
    x = 368,573,561.60/21,418.38
  6. Step 6: Final answer
    x = 17,208.28

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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.