Home / 20,865.92-28,794.30-11,434.28

Finding the Fourth Proportional to 20,865.92, 28,794.30 and 11,434.28

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Solution

The fourth proportional to 20,865.92, 28,794.30 and 11,434.28 is: 15,778.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.92 : 28,794.30 = 11,434.28 : x
  2. Step 2: Convert to fraction form
    20,865.92/28,794.30 = 11,434.28/x
  3. Step 3: Cross multiply
    20,865.92x = 28,794.30 × 11,434.28
  4. Step 4: Simplify right side
    20,865.92x = 329,242,088.60
  5. Step 5: Solve for x
    x = 329,242,088.60/20,865.92
  6. Step 6: Final answer
    x = 15,778.94

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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.