Home / 21,149.76-29,184.42-11,717.40

Finding the Fourth Proportional to 21,149.76, 29,184.42 and 11,717.40

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Solution

The fourth proportional to 21,149.76, 29,184.42 and 11,717.40 is: 16,168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.76 : 29,184.42 = 11,717.40 : x
  2. Step 2: Convert to fraction form
    21,149.76/29,184.42 = 11,717.40/x
  3. Step 3: Cross multiply
    21,149.76x = 29,184.42 × 11,717.40
  4. Step 4: Simplify right side
    21,149.76x = 341,965,522.91
  5. Step 5: Solve for x
    x = 341,965,522.91/21,149.76
  6. Step 6: Final answer
    x = 16,168.77

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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.