Home / 20,993,143.79-28,969,499.61-11,701,479.17

Finding the Fourth Proportional to 20,993,143.79, 28,969,499.61 and 11,701,479.17

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Solution

The fourth proportional to 20,993,143.79, 28,969,499.61 and 11,701,479.17 is: 16,147,462.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,143.79 : 28,969,499.61 = 11,701,479.17 : x
  2. Step 2: Convert to fraction form
    20,993,143.79/28,969,499.61 = 11,701,479.17/x
  3. Step 3: Cross multiply
    20,993,143.79x = 28,969,499.61 × 11,701,479.17
  4. Step 4: Simplify right side
    20,993,143.79x = 338,985,996,106,890.56
  5. Step 5: Solve for x
    x = 338,985,996,106,890.56/20,993,143.79
  6. Step 6: Final answer
    x = 16,147,462.22

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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.