Home / 20,891,020.61-31,334,673.03-7,243,861.43

Finding the Fourth Proportional to 20,891,020.61, 31,334,673.03 and 7,243,861.43

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Solution

The fourth proportional to 20,891,020.61, 31,334,673.03 and 7,243,861.43 is: 10,865,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891,020.61 : 31,334,673.03 = 7,243,861.43 : x
  2. Step 2: Convert to fraction form
    20,891,020.61/31,334,673.03 = 7,243,861.43/x
  3. Step 3: Cross multiply
    20,891,020.61x = 31,334,673.03 × 7,243,861.43
  4. Step 4: Simplify right side
    20,891,020.61x = 226,984,029,227,004.88
  5. Step 5: Solve for x
    x = 226,984,029,227,004.88/20,891,020.61
  6. Step 6: Final answer
    x = 10,865,147.93

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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.