Home / 21,154.52-29,197.32-12,207.80

Finding the Fourth Proportional to 21,154.52, 29,197.32 and 12,207.80

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Solution

The fourth proportional to 21,154.52, 29,197.32 and 12,207.80 is: 16,849.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.52 : 29,197.32 = 12,207.80 : x
  2. Step 2: Convert to fraction form
    21,154.52/29,197.32 = 12,207.80/x
  3. Step 3: Cross multiply
    21,154.52x = 29,197.32 × 12,207.80
  4. Step 4: Simplify right side
    21,154.52x = 356,435,043.10
  5. Step 5: Solve for x
    x = 356,435,043.10/21,154.52
  6. Step 6: Final answer
    x = 16,849.12

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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.