Home / 21,319.47-29,420.14-11,759.73

Finding the Fourth Proportional to 21,319.47, 29,420.14 and 11,759.73

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Solution

The fourth proportional to 21,319.47, 29,420.14 and 11,759.73 is: 16,228.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.47 : 29,420.14 = 11,759.73 : x
  2. Step 2: Convert to fraction form
    21,319.47/29,420.14 = 11,759.73/x
  3. Step 3: Cross multiply
    21,319.47x = 29,420.14 × 11,759.73
  4. Step 4: Simplify right side
    21,319.47x = 345,972,902.96
  5. Step 5: Solve for x
    x = 345,972,902.96/21,319.47
  6. Step 6: Final answer
    x = 16,228.03

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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.