Home / 20,358,090.72-28,094,195.52-11,190,789.36

Finding the Fourth Proportional to 20,358,090.72, 28,094,195.52 and 11,190,789.36

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Solution

The fourth proportional to 20,358,090.72, 28,094,195.52 and 11,190,789.36 is: 15,443,305.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358,090.72 : 28,094,195.52 = 11,190,789.36 : x
  2. Step 2: Convert to fraction form
    20,358,090.72/28,094,195.52 = 11,190,789.36/x
  3. Step 3: Cross multiply
    20,358,090.72x = 28,094,195.52 × 11,190,789.36
  4. Step 4: Simplify right side
    20,358,090.72x = 314,396,224,302,975.62
  5. Step 5: Solve for x
    x = 314,396,224,302,975.62/20,358,090.72
  6. Step 6: Final answer
    x = 15,443,305.99

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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.