Home / 20,414,807.90-28,172,419.40-11,247,450.64

Finding the Fourth Proportional to 20,414,807.90, 28,172,419.40 and 11,247,450.64

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Solution

The fourth proportional to 20,414,807.90, 28,172,419.40 and 11,247,450.64 is: 15,521,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414,807.90 : 28,172,419.40 = 11,247,450.64 : x
  2. Step 2: Convert to fraction form
    20,414,807.90/28,172,419.40 = 11,247,450.64/x
  3. Step 3: Cross multiply
    20,414,807.90x = 28,172,419.40 × 11,247,450.64
  4. Step 4: Simplify right side
    20,414,807.90x = 316,867,896,610,878.44
  5. Step 5: Solve for x
    x = 316,867,896,610,878.44/20,414,807.90
  6. Step 6: Final answer
    x = 15,521,473.34

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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.