Home / 18,715,738.40-28,026,368.40-12,291,207.20

Finding the Fourth Proportional to 18,715,738.40, 28,026,368.40 and 12,291,207.20

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Solution

The fourth proportional to 18,715,738.40, 28,026,368.40 and 12,291,207.20 is: 18,405,787.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,738.40 : 28,026,368.40 = 12,291,207.20 : x
  2. Step 2: Convert to fraction form
    18,715,738.40/28,026,368.40 = 12,291,207.20/x
  3. Step 3: Cross multiply
    18,715,738.40x = 28,026,368.40 × 12,291,207.20
  4. Step 4: Simplify right side
    18,715,738.40x = 344,477,901,067,932.44
  5. Step 5: Solve for x
    x = 344,477,901,067,932.44/18,715,738.40
  6. Step 6: Final answer
    x = 18,405,787.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.