Home / 21,646.50-29,872.17-12,214.86

Finding the Fourth Proportional to 21,646.50, 29,872.17 and 12,214.86

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Solution

The fourth proportional to 21,646.50, 29,872.17 and 12,214.86 is: 16,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646.50 : 29,872.17 = 12,214.86 : x
  2. Step 2: Convert to fraction form
    21,646.50/29,872.17 = 12,214.86/x
  3. Step 3: Cross multiply
    21,646.50x = 29,872.17 × 12,214.86
  4. Step 4: Simplify right side
    21,646.50x = 364,884,374.45
  5. Step 5: Solve for x
    x = 364,884,374.45/21,646.50
  6. Step 6: Final answer
    x = 16,856.51

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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.