Home / 21,711.12-29,959.44-12,282

Finding the Fourth Proportional to 21,711.12, 29,959.44 and 12,282

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Solution

The fourth proportional to 21,711.12, 29,959.44 and 12,282 is: 16,948.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,711.12 : 29,959.44 = 12,282 : x
  2. Step 2: Convert to fraction form
    21,711.12/29,959.44 = 12,282/x
  3. Step 3: Cross multiply
    21,711.12x = 29,959.44 × 12,282
  4. Step 4: Simplify right side
    21,711.12x = 367,961,842.08
  5. Step 5: Solve for x
    x = 367,961,842.08/21,711.12
  6. Step 6: Final answer
    x = 16,948.08

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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.