Home / 20,479,154.99-28,260,694.27-11,311,600.91

Finding the Fourth Proportional to 20,479,154.99, 28,260,694.27 and 11,311,600.91

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Solution

The fourth proportional to 20,479,154.99, 28,260,694.27 and 11,311,600.91 is: 15,609,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479,154.99 : 28,260,694.27 = 11,311,600.91 : x
  2. Step 2: Convert to fraction form
    20,479,154.99/28,260,694.27 = 11,311,600.91/x
  3. Step 3: Cross multiply
    20,479,154.99x = 28,260,694.27 × 11,311,600.91
  4. Step 4: Simplify right side
    20,479,154.99x = 319,673,695,021,763.81
  5. Step 5: Solve for x
    x = 319,673,695,021,763.81/20,479,154.99
  6. Step 6: Final answer
    x = 15,609,711.20

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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.