Home / 21,939.67-30,276.65-11,868.13

Finding the Fourth Proportional to 21,939.67, 30,276.65 and 11,868.13

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Solution

The fourth proportional to 21,939.67, 30,276.65 and 11,868.13 is: 16,377.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.67 : 30,276.65 = 11,868.13 : x
  2. Step 2: Convert to fraction form
    21,939.67/30,276.65 = 11,868.13/x
  3. Step 3: Cross multiply
    21,939.67x = 30,276.65 × 11,868.13
  4. Step 4: Simplify right side
    21,939.67x = 359,327,007.44
  5. Step 5: Solve for x
    x = 359,327,007.44/21,939.67
  6. Step 6: Final answer
    x = 16,377.96

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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.