Home / 21,134.70-29,162.10-12,182.58

Finding the Fourth Proportional to 21,134.70, 29,162.10 and 12,182.58

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Solution

The fourth proportional to 21,134.70, 29,162.10 and 12,182.58 is: 16,809.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.70 : 29,162.10 = 12,182.58 : x
  2. Step 2: Convert to fraction form
    21,134.70/29,162.10 = 12,182.58/x
  3. Step 3: Cross multiply
    21,134.70x = 29,162.10 × 12,182.58
  4. Step 4: Simplify right side
    21,134.70x = 355,269,616.22
  5. Step 5: Solve for x
    x = 355,269,616.22/21,134.70
  6. Step 6: Final answer
    x = 16,809.78

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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.