Home / 18,971,816.40-28,458,511.80-5,508,644.40

Finding the Fourth Proportional to 18,971,816.40, 28,458,511.80 and 5,508,644.40

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Solution

The fourth proportional to 18,971,816.40, 28,458,511.80 and 5,508,644.40 is: 8,263,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971,816.40 : 28,458,511.80 = 5,508,644.40 : x
  2. Step 2: Convert to fraction form
    18,971,816.40/28,458,511.80 = 5,508,644.40/x
  3. Step 3: Cross multiply
    18,971,816.40x = 28,458,511.80 × 5,508,644.40
  4. Step 4: Simplify right side
    18,971,816.40x = 156,767,821,659,403.94
  5. Step 5: Solve for x
    x = 156,767,821,659,403.94/18,971,816.40
  6. Step 6: Final answer
    x = 8,263,195.17

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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.