Home / 20,811,904.70-31,217,857.05-20,493,040.10

Finding the Fourth Proportional to 20,811,904.70, 31,217,857.05 and 20,493,040.10

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Solution

The fourth proportional to 20,811,904.70, 31,217,857.05 and 20,493,040.10 is: 30,739,560.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811,904.70 : 31,217,857.05 = 20,493,040.10 : x
  2. Step 2: Convert to fraction form
    20,811,904.70/31,217,857.05 = 20,493,040.10/x
  3. Step 3: Cross multiply
    20,811,904.70x = 31,217,857.05 × 20,493,040.10
  4. Step 4: Simplify right side
    20,811,904.70x = 639,748,796,361,717.75
  5. Step 5: Solve for x
    x = 639,748,796,361,717.75/20,811,904.70
  6. Step 6: Final answer
    x = 30,739,560.15

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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.