Home / 12,379,748.40-18,569,622.60-7,844,785.20

Finding the Fourth Proportional to 12,379,748.40, 18,569,622.60 and 7,844,785.20

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Solution

The fourth proportional to 12,379,748.40, 18,569,622.60 and 7,844,785.20 is: 11,767,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379,748.40 : 18,569,622.60 = 7,844,785.20 : x
  2. Step 2: Convert to fraction form
    12,379,748.40/18,569,622.60 = 7,844,785.20/x
  3. Step 3: Cross multiply
    12,379,748.40x = 18,569,622.60 × 7,844,785.20
  4. Step 4: Simplify right side
    12,379,748.40x = 145,674,700,542,065.53
  5. Step 5: Solve for x
    x = 145,674,700,542,065.53/12,379,748.40
  6. Step 6: Final answer
    x = 11,767,177.80

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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.