Home / 12,631,997.20-18,920,002.20-9,782,870.80

Finding the Fourth Proportional to 12,631,997.20, 18,920,002.20 and 9,782,870.80

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Solution

The fourth proportional to 12,631,997.20, 18,920,002.20 and 9,782,870.80 is: 14,652,626.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631,997.20 : 18,920,002.20 = 9,782,870.80 : x
  2. Step 2: Convert to fraction form
    12,631,997.20/18,920,002.20 = 9,782,870.80/x
  3. Step 3: Cross multiply
    12,631,997.20x = 18,920,002.20 × 9,782,870.80
  4. Step 4: Simplify right side
    12,631,997.20x = 185,091,937,058,315.78
  5. Step 5: Solve for x
    x = 185,091,937,058,315.78/12,631,997.20
  6. Step 6: Final answer
    x = 14,652,626.51

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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.