Home / 21,245.95-29,317.30-16,213.42

Finding the Fourth Proportional to 21,245.95, 29,317.30 and 16,213.42

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Solution

The fourth proportional to 21,245.95, 29,317.30 and 16,213.42 is: 22,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.95 : 29,317.30 = 16,213.42 : x
  2. Step 2: Convert to fraction form
    21,245.95/29,317.30 = 16,213.42/x
  3. Step 3: Cross multiply
    21,245.95x = 29,317.30 × 16,213.42
  4. Step 4: Simplify right side
    21,245.95x = 475,333,698.17
  5. Step 5: Solve for x
    x = 475,333,698.17/21,245.95
  6. Step 6: Final answer
    x = 22,372.91

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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.