Home / 21,814.91-30,105.84-16,427.70

Finding the Fourth Proportional to 21,814.91, 30,105.84 and 16,427.70

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Solution

The fourth proportional to 21,814.91, 30,105.84 and 16,427.70 is: 22,671.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.91 : 30,105.84 = 16,427.70 : x
  2. Step 2: Convert to fraction form
    21,814.91/30,105.84 = 16,427.70/x
  3. Step 3: Cross multiply
    21,814.91x = 30,105.84 × 16,427.70
  4. Step 4: Simplify right side
    21,814.91x = 494,569,707.77
  5. Step 5: Solve for x
    x = 494,569,707.77/21,814.91
  6. Step 6: Final answer
    x = 22,671.18

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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.