Home / 21,154.60-29,194.51-11,722.96

Finding the Fourth Proportional to 21,154.60, 29,194.51 and 11,722.96

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Solution

The fourth proportional to 21,154.60, 29,194.51 and 11,722.96 is: 16,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.60 : 29,194.51 = 11,722.96 : x
  2. Step 2: Convert to fraction form
    21,154.60/29,194.51 = 11,722.96/x
  3. Step 3: Cross multiply
    21,154.60x = 29,194.51 × 11,722.96
  4. Step 4: Simplify right side
    21,154.60x = 342,245,926.98
  5. Step 5: Solve for x
    x = 342,245,926.98/21,154.60
  6. Step 6: Final answer
    x = 16,178.33

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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.