Home / 20,500,645.72-28,291,481.52-11,333,878.96

Finding the Fourth Proportional to 20,500,645.72, 28,291,481.52 and 11,333,878.96

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Solution

The fourth proportional to 20,500,645.72, 28,291,481.52 and 11,333,878.96 is: 15,641,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500,645.72 : 28,291,481.52 = 11,333,878.96 : x
  2. Step 2: Convert to fraction form
    20,500,645.72/28,291,481.52 = 11,333,878.96/x
  3. Step 3: Cross multiply
    20,500,645.72x = 28,291,481.52 × 11,333,878.96
  4. Step 4: Simplify right side
    20,500,645.72x = 320,652,227,146,756.81
  5. Step 5: Solve for x
    x = 320,652,227,146,756.81/20,500,645.72
  6. Step 6: Final answer
    x = 15,641,079.38

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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.