Home / 20,691,928.83-28,554,867.18-11,995,162.95

Finding the Fourth Proportional to 20,691,928.83, 28,554,867.18 and 11,995,162.95

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Solution

The fourth proportional to 20,691,928.83, 28,554,867.18 and 11,995,162.95 is: 16,553,328.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691,928.83 : 28,554,867.18 = 11,995,162.95 : x
  2. Step 2: Convert to fraction form
    20,691,928.83/28,554,867.18 = 11,995,162.95/x
  3. Step 3: Cross multiply
    20,691,928.83x = 28,554,867.18 × 11,995,162.95
  4. Step 4: Simplify right side
    20,691,928.83x = 342,520,284,839,706.94
  5. Step 5: Solve for x
    x = 342,520,284,839,706.94/20,691,928.83
  6. Step 6: Final answer
    x = 16,553,328.00

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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.