Home / 20,996,897.50-28,975,718.94-11,339,105.50

Finding the Fourth Proportional to 20,996,897.50, 28,975,718.94 and 11,339,105.50

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Solution

The fourth proportional to 20,996,897.50, 28,975,718.94 and 11,339,105.50 is: 15,647,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996,897.50 : 28,975,718.94 = 11,339,105.50 : x
  2. Step 2: Convert to fraction form
    20,996,897.50/28,975,718.94 = 11,339,105.50/x
  3. Step 3: Cross multiply
    20,996,897.50x = 28,975,718.94 × 11,339,105.50
  4. Step 4: Simplify right side
    20,996,897.50x = 328,558,733,999,008.19
  5. Step 5: Solve for x
    x = 328,558,733,999,008.19/20,996,897.50
  6. Step 6: Final answer
    x = 15,647,965.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.