Home / 21,282.75-29,370.20-11,851.11

Finding the Fourth Proportional to 21,282.75, 29,370.20 and 11,851.11

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Solution

The fourth proportional to 21,282.75, 29,370.20 and 11,851.11 is: 16,354.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.75 : 29,370.20 = 11,851.11 : x
  2. Step 2: Convert to fraction form
    21,282.75/29,370.20 = 11,851.11/x
  3. Step 3: Cross multiply
    21,282.75x = 29,370.20 × 11,851.11
  4. Step 4: Simplify right side
    21,282.75x = 348,069,411.67
  5. Step 5: Solve for x
    x = 348,069,411.67/21,282.75
  6. Step 6: Final answer
    x = 16,354.53

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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.