Home / 12,528,078.20-18,792,117.30-7,489,230.20

Finding the Fourth Proportional to 12,528,078.20, 18,792,117.30 and 7,489,230.20

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Solution

The fourth proportional to 12,528,078.20, 18,792,117.30 and 7,489,230.20 is: 11,233,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528,078.20 : 18,792,117.30 = 7,489,230.20 : x
  2. Step 2: Convert to fraction form
    12,528,078.20/18,792,117.30 = 7,489,230.20/x
  3. Step 3: Cross multiply
    12,528,078.20x = 18,792,117.30 × 7,489,230.20
  4. Step 4: Simplify right side
    12,528,078.20x = 140,738,492,405,102.47
  5. Step 5: Solve for x
    x = 140,738,492,405,102.47/12,528,078.20
  6. Step 6: Final answer
    x = 11,233,845.30

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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.