Home / 20,853,460.40-31,280,128.03-5,291,258.86

Finding the Fourth Proportional to 20,853,460.40, 31,280,128.03 and 5,291,258.86

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Solution

The fourth proportional to 20,853,460.40, 31,280,128.03 and 5,291,258.86 is: 7,936,872.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853,460.40 : 31,280,128.03 = 5,291,258.86 : x
  2. Step 2: Convert to fraction form
    20,853,460.40/31,280,128.03 = 5,291,258.86/x
  3. Step 3: Cross multiply
    20,853,460.40x = 31,280,128.03 × 5,291,258.86
  4. Step 4: Simplify right side
    20,853,460.40x = 165,511,254,489,243.38
  5. Step 5: Solve for x
    x = 165,511,254,489,243.38/20,853,460.40
  6. Step 6: Final answer
    x = 7,936,872.41

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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.