Home / 21,027.72-29,022.57-12,081.45

Finding the Fourth Proportional to 21,027.72, 29,022.57 and 12,081.45

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Solution

The fourth proportional to 21,027.72, 29,022.57 and 12,081.45 is: 16,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.72 : 29,022.57 = 12,081.45 : x
  2. Step 2: Convert to fraction form
    21,027.72/29,022.57 = 12,081.45/x
  3. Step 3: Cross multiply
    21,027.72x = 29,022.57 × 12,081.45
  4. Step 4: Simplify right side
    21,027.72x = 350,634,728.33
  5. Step 5: Solve for x
    x = 350,634,728.33/21,027.72
  6. Step 6: Final answer
    x = 16,674.88

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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.