Home / 27,612.40-38,106.70-20,794.22

Finding the Fourth Proportional to 27,612.40, 38,106.70 and 20,794.22

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Solution

The fourth proportional to 27,612.40, 38,106.70 and 20,794.22 is: 28,697.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,612.40 : 38,106.70 = 20,794.22 : x
  2. Step 2: Convert to fraction form
    27,612.40/38,106.70 = 20,794.22/x
  3. Step 3: Cross multiply
    27,612.40x = 38,106.70 × 20,794.22
  4. Step 4: Simplify right side
    27,612.40x = 792,399,103.27
  5. Step 5: Solve for x
    x = 792,399,103.27/27,612.40
  6. Step 6: Final answer
    x = 28,697.22

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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.