Home / 12,720,795.28-19,033,041.78-7,536,188.44

Finding the Fourth Proportional to 12,720,795.28, 19,033,041.78 and 7,536,188.44

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Solution

The fourth proportional to 12,720,795.28, 19,033,041.78 and 7,536,188.44 is: 11,275,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720,795.28 : 19,033,041.78 = 7,536,188.44 : x
  2. Step 2: Convert to fraction form
    12,720,795.28/19,033,041.78 = 7,536,188.44/x
  3. Step 3: Cross multiply
    12,720,795.28x = 19,033,041.78 × 7,536,188.44
  4. Step 4: Simplify right side
    12,720,795.28x = 143,436,589,440,473.03
  5. Step 5: Solve for x
    x = 143,436,589,440,473.03/12,720,795.28
  6. Step 6: Final answer
    x = 11,275,756.45

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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.