Home / 21,126.06-29,161.24-12,177.14

Finding the Fourth Proportional to 21,126.06, 29,161.24 and 12,177.14

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Solution

The fourth proportional to 21,126.06, 29,161.24 and 12,177.14 is: 16,808.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.06 : 29,161.24 = 12,177.14 : x
  2. Step 2: Convert to fraction form
    21,126.06/29,161.24 = 12,177.14/x
  3. Step 3: Cross multiply
    21,126.06x = 29,161.24 × 12,177.14
  4. Step 4: Simplify right side
    21,126.06x = 355,100,502.05
  5. Step 5: Solve for x
    x = 355,100,502.05/21,126.06
  6. Step 6: Final answer
    x = 16,808.65

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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.