Home / 20,900,768.83-28,841,468.65-11,731,640.11

Finding the Fourth Proportional to 20,900,768.83, 28,841,468.65 and 11,731,640.11

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Solution

The fourth proportional to 20,900,768.83, 28,841,468.65 and 11,731,640.11 is: 16,188,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900,768.83 : 28,841,468.65 = 11,731,640.11 : x
  2. Step 2: Convert to fraction form
    20,900,768.83/28,841,468.65 = 11,731,640.11/x
  3. Step 3: Cross multiply
    20,900,768.83x = 28,841,468.65 × 11,731,640.11
  4. Step 4: Simplify right side
    20,900,768.83x = 338,357,730,445,647.50
  5. Step 5: Solve for x
    x = 338,357,730,445,647.50/20,900,768.83
  6. Step 6: Final answer
    x = 16,188,769.57

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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.