Home / 18,756,665.88-28,131,061.86-5,290,344.60

Finding the Fourth Proportional to 18,756,665.88, 28,131,061.86 and 5,290,344.60

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Solution

The fourth proportional to 18,756,665.88, 28,131,061.86 and 5,290,344.60 is: 7,934,406.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756,665.88 : 28,131,061.86 = 5,290,344.60 : x
  2. Step 2: Convert to fraction form
    18,756,665.88/28,131,061.86 = 5,290,344.60/x
  3. Step 3: Cross multiply
    18,756,665.88x = 28,131,061.86 × 5,290,344.60
  4. Step 4: Simplify right side
    18,756,665.88x = 148,823,011,203,316.94
  5. Step 5: Solve for x
    x = 148,823,011,203,316.94/18,756,665.88
  6. Step 6: Final answer
    x = 7,934,406.47

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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.