Home / 20,553,358.19-28,360,029.36-11,728,780.39

Finding the Fourth Proportional to 20,553,358.19, 28,360,029.36 and 11,728,780.39

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Solution

The fourth proportional to 20,553,358.19, 28,360,029.36 and 11,728,780.39 is: 16,183,659.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553,358.19 : 28,360,029.36 = 11,728,780.39 : x
  2. Step 2: Convert to fraction form
    20,553,358.19/28,360,029.36 = 11,728,780.39/x
  3. Step 3: Cross multiply
    20,553,358.19x = 28,360,029.36 × 11,728,780.39
  4. Step 4: Simplify right side
    20,553,358.19x = 332,628,556,094,720.94
  5. Step 5: Solve for x
    x = 332,628,556,094,720.94/20,553,358.19
  6. Step 6: Final answer
    x = 16,183,659.77

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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.