Home / 21,219.48-29,282.82-11,657.83

Finding the Fourth Proportional to 21,219.48, 29,282.82 and 11,657.83

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Solution

The fourth proportional to 21,219.48, 29,282.82 and 11,657.83 is: 16,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.48 : 29,282.82 = 11,657.83 : x
  2. Step 2: Convert to fraction form
    21,219.48/29,282.82 = 11,657.83/x
  3. Step 3: Cross multiply
    21,219.48x = 29,282.82 × 11,657.83
  4. Step 4: Simplify right side
    21,219.48x = 341,374,137.48
  5. Step 5: Solve for x
    x = 341,374,137.48/21,219.48
  6. Step 6: Final answer
    x = 16,087.77

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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.