Home / 21,268.79-29,350.45-11,838.23

Finding the Fourth Proportional to 21,268.79, 29,350.45 and 11,838.23

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Solution

The fourth proportional to 21,268.79, 29,350.45 and 11,838.23 is: 16,336.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.79 : 29,350.45 = 11,838.23 : x
  2. Step 2: Convert to fraction form
    21,268.79/29,350.45 = 11,838.23/x
  3. Step 3: Cross multiply
    21,268.79x = 29,350.45 × 11,838.23
  4. Step 4: Simplify right side
    21,268.79x = 347,457,377.70
  5. Step 5: Solve for x
    x = 347,457,377.70/21,268.79
  6. Step 6: Final answer
    x = 16,336.49

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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.