Home / 18,139,279.32-25,032,205.46-9,990,517.32

Finding the Fourth Proportional to 18,139,279.32, 25,032,205.46 and 9,990,517.32

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Solution

The fourth proportional to 18,139,279.32, 25,032,205.46 and 9,990,517.32 is: 13,786,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139,279.32 : 25,032,205.46 = 9,990,517.32 : x
  2. Step 2: Convert to fraction form
    18,139,279.32/25,032,205.46 = 9,990,517.32/x
  3. Step 3: Cross multiply
    18,139,279.32x = 25,032,205.46 × 9,990,517.32
  4. Step 4: Simplify right side
    18,139,279.32x = 250,084,682,205,928.59
  5. Step 5: Solve for x
    x = 250,084,682,205,928.59/18,139,279.32
  6. Step 6: Final answer
    x = 13,786,913.90

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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.