Home / 21,247.68-29,321.28-12,293.94

Finding the Fourth Proportional to 21,247.68, 29,321.28 and 12,293.94

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Solution

The fourth proportional to 21,247.68, 29,321.28 and 12,293.94 is: 16,965.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.68 : 29,321.28 = 12,293.94 : x
  2. Step 2: Convert to fraction form
    21,247.68/29,321.28 = 12,293.94/x
  3. Step 3: Cross multiply
    21,247.68x = 29,321.28 × 12,293.94
  4. Step 4: Simplify right side
    21,247.68x = 360,474,057.04
  5. Step 5: Solve for x
    x = 360,474,057.04/21,247.68
  6. Step 6: Final answer
    x = 16,965.34

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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.