Home / 21,712.88-29,963.56-12,281.36

Finding the Fourth Proportional to 21,712.88, 29,963.56 and 12,281.36

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Solution

The fourth proportional to 21,712.88, 29,963.56 and 12,281.36 is: 16,948.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.88 : 29,963.56 = 12,281.36 : x
  2. Step 2: Convert to fraction form
    21,712.88/29,963.56 = 12,281.36/x
  3. Step 3: Cross multiply
    21,712.88x = 29,963.56 × 12,281.36
  4. Step 4: Simplify right side
    21,712.88x = 367,993,267.24
  5. Step 5: Solve for x
    x = 367,993,267.24/21,712.88
  6. Step 6: Final answer
    x = 16,948.16

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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.