Home / 21,154.68-29,192.13-11,722.50

Finding the Fourth Proportional to 21,154.68, 29,192.13 and 11,722.50

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Solution

The fourth proportional to 21,154.68, 29,192.13 and 11,722.50 is: 16,176.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.68 : 29,192.13 = 11,722.50 : x
  2. Step 2: Convert to fraction form
    21,154.68/29,192.13 = 11,722.50/x
  3. Step 3: Cross multiply
    21,154.68x = 29,192.13 × 11,722.50
  4. Step 4: Simplify right side
    21,154.68x = 342,204,743.93
  5. Step 5: Solve for x
    x = 342,204,743.93/21,154.68
  6. Step 6: Final answer
    x = 16,176.31

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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.