Home / 21,153.92-29,195.52-12,199.68

Finding the Fourth Proportional to 21,153.92, 29,195.52 and 12,199.68

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Solution

The fourth proportional to 21,153.92, 29,195.52 and 12,199.68 is: 16,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.92 : 29,195.52 = 12,199.68 : x
  2. Step 2: Convert to fraction form
    21,153.92/29,195.52 = 12,199.68/x
  3. Step 3: Cross multiply
    21,153.92x = 29,195.52 × 12,199.68
  4. Step 4: Simplify right side
    21,153.92x = 356,176,001.43
  5. Step 5: Solve for x
    x = 356,176,001.43/21,153.92
  6. Step 6: Final answer
    x = 16,837.36

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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.