Home / 12,528,033.10-18,792,049.65-7,720,132.30

Finding the Fourth Proportional to 12,528,033.10, 18,792,049.65 and 7,720,132.30

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Solution

The fourth proportional to 12,528,033.10, 18,792,049.65 and 7,720,132.30 is: 11,580,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528,033.10 : 18,792,049.65 = 7,720,132.30 : x
  2. Step 2: Convert to fraction form
    12,528,033.10/18,792,049.65 = 7,720,132.30/x
  3. Step 3: Cross multiply
    12,528,033.10x = 18,792,049.65 × 7,720,132.30
  4. Step 4: Simplify right side
    12,528,033.10x = 145,077,109,486,168.69
  5. Step 5: Solve for x
    x = 145,077,109,486,168.69/12,528,033.10
  6. Step 6: Final answer
    x = 11,580,198.45

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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.