Home / 21,272.96-29,357.20-11,842.16

Finding the Fourth Proportional to 21,272.96, 29,357.20 and 11,842.16

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Solution

The fourth proportional to 21,272.96, 29,357.20 and 11,842.16 is: 16,342.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.96 : 29,357.20 = 11,842.16 : x
  2. Step 2: Convert to fraction form
    21,272.96/29,357.20 = 11,842.16/x
  3. Step 3: Cross multiply
    21,272.96x = 29,357.20 × 11,842.16
  4. Step 4: Simplify right side
    21,272.96x = 347,652,659.55
  5. Step 5: Solve for x
    x = 347,652,659.55/21,272.96
  6. Step 6: Final answer
    x = 16,342.47

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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.