Home / 21,339.92-29,454.36-12,963.44

Finding the Fourth Proportional to 21,339.92, 29,454.36 and 12,963.44

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Solution

The fourth proportional to 21,339.92, 29,454.36 and 12,963.44 is: 17,892.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.92 : 29,454.36 = 12,963.44 : x
  2. Step 2: Convert to fraction form
    21,339.92/29,454.36 = 12,963.44/x
  3. Step 3: Cross multiply
    21,339.92x = 29,454.36 × 12,963.44
  4. Step 4: Simplify right side
    21,339.92x = 381,829,828.60
  5. Step 5: Solve for x
    x = 381,829,828.60/21,339.92
  6. Step 6: Final answer
    x = 17,892.75

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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.