Home / 21,278.20-32,076.64-19,850.98

Finding the Fourth Proportional to 21,278.20, 32,076.64 and 19,850.98

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Solution

The fourth proportional to 21,278.20, 32,076.64 and 19,850.98 is: 29,925.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.20 : 32,076.64 = 19,850.98 : x
  2. Step 2: Convert to fraction form
    21,278.20/32,076.64 = 19,850.98/x
  3. Step 3: Cross multiply
    21,278.20x = 32,076.64 × 19,850.98
  4. Step 4: Simplify right side
    21,278.20x = 636,752,739.11
  5. Step 5: Solve for x
    x = 636,752,739.11/21,278.20
  6. Step 6: Final answer
    x = 29,925.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.