Home / 18,728,336.40-28,101,835.80-10,647,517.20

Finding the Fourth Proportional to 18,728,336.40, 28,101,835.80 and 10,647,517.20

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Solution

The fourth proportional to 18,728,336.40, 28,101,835.80 and 10,647,517.20 is: 15,976,580.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,336.40 : 28,101,835.80 = 10,647,517.20 : x
  2. Step 2: Convert to fraction form
    18,728,336.40/28,101,835.80 = 10,647,517.20/x
  3. Step 3: Cross multiply
    18,728,336.40x = 28,101,835.80 × 10,647,517.20
  4. Step 4: Simplify right side
    18,728,336.40x = 299,214,780,032,075.75
  5. Step 5: Solve for x
    x = 299,214,780,032,075.75/18,728,336.40
  6. Step 6: Final answer
    x = 15,976,580.82

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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.