Home / 20,479,369.96-28,260,989.22-11,311,815.88

Finding the Fourth Proportional to 20,479,369.96, 28,260,989.22 and 11,311,815.88

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Solution

The fourth proportional to 20,479,369.96, 28,260,989.22 and 11,311,815.88 is: 15,610,006.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479,369.96 : 28,260,989.22 = 11,311,815.88 : x
  2. Step 2: Convert to fraction form
    20,479,369.96/28,260,989.22 = 11,311,815.88/x
  3. Step 3: Cross multiply
    20,479,369.96x = 28,260,989.22 × 11,311,815.88
  4. Step 4: Simplify right side
    20,479,369.96x = 319,683,106,643,304.81
  5. Step 5: Solve for x
    x = 319,683,106,643,304.81/20,479,369.96
  6. Step 6: Final answer
    x = 15,610,006.91

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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.