Home / 20,115,008.20-30,172,512.30-7,335,929.80

Finding the Fourth Proportional to 20,115,008.20, 30,172,512.30 and 7,335,929.80

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Solution

The fourth proportional to 20,115,008.20, 30,172,512.30 and 7,335,929.80 is: 11,003,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115,008.20 : 30,172,512.30 = 7,335,929.80 : x
  2. Step 2: Convert to fraction form
    20,115,008.20/30,172,512.30 = 7,335,929.80/x
  3. Step 3: Cross multiply
    20,115,008.20x = 30,172,512.30 × 7,335,929.80
  4. Step 4: Simplify right side
    20,115,008.20x = 221,343,432,122,436.53
  5. Step 5: Solve for x
    x = 221,343,432,122,436.53/20,115,008.20
  6. Step 6: Final answer
    x = 11,003,894.70

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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.