Home / 19,865.11-29,789.56-8,621.23

Finding the Fourth Proportional to 19,865.11, 29,789.56 and 8,621.23

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Solution

The fourth proportional to 19,865.11, 29,789.56 and 8,621.23 is: 12,928.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.11 : 29,789.56 = 8,621.23 : x
  2. Step 2: Convert to fraction form
    19,865.11/29,789.56 = 8,621.23/x
  3. Step 3: Cross multiply
    19,865.11x = 29,789.56 × 8,621.23
  4. Step 4: Simplify right side
    19,865.11x = 256,822,648.36
  5. Step 5: Solve for x
    x = 256,822,648.36/19,865.11
  6. Step 6: Final answer
    x = 12,928.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.