Home / 20,703,005.20-31,031,179.80-9,925,469.20

Finding the Fourth Proportional to 20,703,005.20, 31,031,179.80 and 9,925,469.20

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Solution

The fourth proportional to 20,703,005.20, 31,031,179.80 and 9,925,469.20 is: 14,877,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703,005.20 : 31,031,179.80 = 9,925,469.20 : x
  2. Step 2: Convert to fraction form
    20,703,005.20/31,031,179.80 = 9,925,469.20/x
  3. Step 3: Cross multiply
    20,703,005.20x = 31,031,179.80 × 9,925,469.20
  4. Step 4: Simplify right side
    20,703,005.20x = 307,999,019,344,562.12
  5. Step 5: Solve for x
    x = 307,999,019,344,562.12/20,703,005.20
  6. Step 6: Final answer
    x = 14,877,019.85

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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.