Home / 21,648.20-29,873.95-12,216.69

Finding the Fourth Proportional to 21,648.20, 29,873.95 and 12,216.69

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Solution

The fourth proportional to 21,648.20, 29,873.95 and 12,216.69 is: 16,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.20 : 29,873.95 = 12,216.69 : x
  2. Step 2: Convert to fraction form
    21,648.20/29,873.95 = 12,216.69/x
  3. Step 3: Cross multiply
    21,648.20x = 29,873.95 × 12,216.69
  4. Step 4: Simplify right side
    21,648.20x = 364,960,755.68
  5. Step 5: Solve for x
    x = 364,960,755.68/21,648.20
  6. Step 6: Final answer
    x = 16,858.72

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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.