Home / 20,138,659.90-30,219,799.65-7,360,456.30

Finding the Fourth Proportional to 20,138,659.90, 30,219,799.65 and 7,360,456.30

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Solution

The fourth proportional to 20,138,659.90, 30,219,799.65 and 7,360,456.30 is: 11,045,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138,659.90 : 30,219,799.65 = 7,360,456.30 : x
  2. Step 2: Convert to fraction form
    20,138,659.90/30,219,799.65 = 7,360,456.30/x
  3. Step 3: Cross multiply
    20,138,659.90x = 30,219,799.65 × 7,360,456.30
  4. Step 4: Simplify right side
    20,138,659.90x = 222,431,514,718,580.28
  5. Step 5: Solve for x
    x = 222,431,514,718,580.28/20,138,659.90
  6. Step 6: Final answer
    x = 11,045,000.80

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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.