Home / 21,117.46-29,141.97-12,161.62

Finding the Fourth Proportional to 21,117.46, 29,141.97 and 12,161.62

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Solution

The fourth proportional to 21,117.46, 29,141.97 and 12,161.62 is: 16,782.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.46 : 29,141.97 = 12,161.62 : x
  2. Step 2: Convert to fraction form
    21,117.46/29,141.97 = 12,161.62/x
  3. Step 3: Cross multiply
    21,117.46x = 29,141.97 × 12,161.62
  4. Step 4: Simplify right side
    21,117.46x = 354,413,565.19
  5. Step 5: Solve for x
    x = 354,413,565.19/21,117.46
  6. Step 6: Final answer
    x = 16,782.96

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Double scale
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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.