Home / 20,982.42-28,956.69-12,029.22

Finding the Fourth Proportional to 20,982.42, 28,956.69 and 12,029.22

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Solution

The fourth proportional to 20,982.42, 28,956.69 and 12,029.22 is: 16,600.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.42 : 28,956.69 = 12,029.22 : x
  2. Step 2: Convert to fraction form
    20,982.42/28,956.69 = 12,029.22/x
  3. Step 3: Cross multiply
    20,982.42x = 28,956.69 × 12,029.22
  4. Step 4: Simplify right side
    20,982.42x = 348,326,394.48
  5. Step 5: Solve for x
    x = 348,326,394.48/20,982.42
  6. Step 6: Final answer
    x = 16,600.87

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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.