Home / 21,027.28-29,021.85-12,080.92

Finding the Fourth Proportional to 21,027.28, 29,021.85 and 12,080.92

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Solution

The fourth proportional to 21,027.28, 29,021.85 and 12,080.92 is: 16,674.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.28 : 29,021.85 = 12,080.92 : x
  2. Step 2: Convert to fraction form
    21,027.28/29,021.85 = 12,080.92/x
  3. Step 3: Cross multiply
    21,027.28x = 29,021.85 × 12,080.92
  4. Step 4: Simplify right side
    21,027.28x = 350,610,648.10
  5. Step 5: Solve for x
    x = 350,610,648.10/21,027.28
  6. Step 6: Final answer
    x = 16,674.08

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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.