Home / 21,278.22-29,365.92-11,848.20

Finding the Fourth Proportional to 21,278.22, 29,365.92 and 11,848.20

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Solution

The fourth proportional to 21,278.22, 29,365.92 and 11,848.20 is: 16,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.22 : 29,365.92 = 11,848.20 : x
  2. Step 2: Convert to fraction form
    21,278.22/29,365.92 = 11,848.20/x
  3. Step 3: Cross multiply
    21,278.22x = 29,365.92 × 11,848.20
  4. Step 4: Simplify right side
    21,278.22x = 347,933,293.34
  5. Step 5: Solve for x
    x = 347,933,293.34/21,278.22
  6. Step 6: Final answer
    x = 16,351.62

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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.