Home / 21,303,003.20-31,917,763.20-9,920,105.60

Finding the Fourth Proportional to 21,303,003.20, 31,917,763.20 and 9,920,105.60

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Solution

The fourth proportional to 21,303,003.20, 31,917,763.20 and 9,920,105.60 is: 14,863,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303,003.20 : 31,917,763.20 = 9,920,105.60 : x
  2. Step 2: Convert to fraction form
    21,303,003.20/31,917,763.20 = 9,920,105.60/x
  3. Step 3: Cross multiply
    21,303,003.20x = 31,917,763.20 × 9,920,105.60
  4. Step 4: Simplify right side
    21,303,003.20x = 316,627,581,459,793.88
  5. Step 5: Solve for x
    x = 316,627,581,459,793.88/21,303,003.20
  6. Step 6: Final answer
    x = 14,863,049.05

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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.