Home / 20,979.35-28,952.99-12,029.06

Finding the Fourth Proportional to 20,979.35, 28,952.99 and 12,029.06

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Solution

The fourth proportional to 20,979.35, 28,952.99 and 12,029.06 is: 16,600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.35 : 28,952.99 = 12,029.06 : x
  2. Step 2: Convert to fraction form
    20,979.35/28,952.99 = 12,029.06/x
  3. Step 3: Cross multiply
    20,979.35x = 28,952.99 × 12,029.06
  4. Step 4: Simplify right side
    20,979.35x = 348,277,253.89
  5. Step 5: Solve for x
    x = 348,277,253.89/20,979.35
  6. Step 6: Final answer
    x = 16,600.96

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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.