Home / 21,226.80-29,294.28-11,795.28

Finding the Fourth Proportional to 21,226.80, 29,294.28 and 11,795.28

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Solution

The fourth proportional to 21,226.80, 29,294.28 and 11,795.28 is: 16,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.80 : 29,294.28 = 11,795.28 : x
  2. Step 2: Convert to fraction form
    21,226.80/29,294.28 = 11,795.28/x
  3. Step 3: Cross multiply
    21,226.80x = 29,294.28 × 11,795.28
  4. Step 4: Simplify right side
    21,226.80x = 345,534,235.00
  5. Step 5: Solve for x
    x = 345,534,235.00/21,226.80
  6. Step 6: Final answer
    x = 16,278.21

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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.