Home / 21,349.44-29,462.40-11,917.80

Finding the Fourth Proportional to 21,349.44, 29,462.40 and 11,917.80

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Solution

The fourth proportional to 21,349.44, 29,462.40 and 11,917.80 is: 16,446.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.44 : 29,462.40 = 11,917.80 : x
  2. Step 2: Convert to fraction form
    21,349.44/29,462.40 = 11,917.80/x
  3. Step 3: Cross multiply
    21,349.44x = 29,462.40 × 11,917.80
  4. Step 4: Simplify right side
    21,349.44x = 351,126,990.72
  5. Step 5: Solve for x
    x = 351,126,990.72/21,349.44
  6. Step 6: Final answer
    x = 16,446.66

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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.