Home / 13,705,458.39-20,557,159.70-3,990,145.86

Finding the Fourth Proportional to 13,705,458.39, 20,557,159.70 and 3,990,145.86

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Solution

The fourth proportional to 13,705,458.39, 20,557,159.70 and 3,990,145.86 is: 5,984,919.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705,458.39 : 20,557,159.70 = 3,990,145.86 : x
  2. Step 2: Convert to fraction form
    13,705,458.39/20,557,159.70 = 3,990,145.86/x
  3. Step 3: Cross multiply
    13,705,458.39x = 20,557,159.70 × 3,990,145.86
  4. Step 4: Simplify right side
    13,705,458.39x = 82,026,065,650,363.11
  5. Step 5: Solve for x
    x = 82,026,065,650,363.11/13,705,458.39
  6. Step 6: Final answer
    x = 5,984,919.53

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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.