Home / 21,398.88-29,524.32-12,322.56

Finding the Fourth Proportional to 21,398.88, 29,524.32 and 12,322.56

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Solution

The fourth proportional to 21,398.88, 29,524.32 and 12,322.56 is: 17,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398.88 : 29,524.32 = 12,322.56 : x
  2. Step 2: Convert to fraction form
    21,398.88/29,524.32 = 12,322.56/x
  3. Step 3: Cross multiply
    21,398.88x = 29,524.32 × 12,322.56
  4. Step 4: Simplify right side
    21,398.88x = 363,815,204.66
  5. Step 5: Solve for x
    x = 363,815,204.66/21,398.88
  6. Step 6: Final answer
    x = 17,001.60

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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.