Home / 21,730.88-29,982.57-12,299.24

Finding the Fourth Proportional to 21,730.88, 29,982.57 and 12,299.24

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Solution

The fourth proportional to 21,730.88, 29,982.57 and 12,299.24 is: 16,969.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.88 : 29,982.57 = 12,299.24 : x
  2. Step 2: Convert to fraction form
    21,730.88/29,982.57 = 12,299.24/x
  3. Step 3: Cross multiply
    21,730.88x = 29,982.57 × 12,299.24
  4. Step 4: Simplify right side
    21,730.88x = 368,762,824.25
  5. Step 5: Solve for x
    x = 368,762,824.25/21,730.88
  6. Step 6: Final answer
    x = 16,969.53

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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.