Home / 20,915,899.95-28,864,642.92-11,623,861.71

Finding the Fourth Proportional to 20,915,899.95, 28,864,642.92 and 11,623,861.71

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Solution

The fourth proportional to 20,915,899.95, 28,864,642.92 and 11,623,861.71 is: 16,041,318.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,899.95 : 28,864,642.92 = 11,623,861.71 : x
  2. Step 2: Convert to fraction form
    20,915,899.95/28,864,642.92 = 11,623,861.71/x
  3. Step 3: Cross multiply
    20,915,899.95x = 28,864,642.92 × 11,623,861.71
  4. Step 4: Simplify right side
    20,915,899.95x = 335,518,617,610,610.62
  5. Step 5: Solve for x
    x = 335,518,617,610,610.62/20,915,899.95
  6. Step 6: Final answer
    x = 16,041,318.73

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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.