Home / 13,731,039.80-18,949,720.66-7,619,468.30

Finding the Fourth Proportional to 13,731,039.80, 18,949,720.66 and 7,619,468.30

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Solution

The fourth proportional to 13,731,039.80, 18,949,720.66 and 7,619,468.30 is: 10,515,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731,039.80 : 18,949,720.66 = 7,619,468.30 : x
  2. Step 2: Convert to fraction form
    13,731,039.80/18,949,720.66 = 7,619,468.30/x
  3. Step 3: Cross multiply
    13,731,039.80x = 18,949,720.66 × 7,619,468.30
  4. Step 4: Simplify right side
    13,731,039.80x = 144,386,795,819,989.25
  5. Step 5: Solve for x
    x = 144,386,795,819,989.25/13,731,039.80
  6. Step 6: Final answer
    x = 10,515,357.75

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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.