Home / 12,379,635.40-18,569,453.10-7,844,672.20

Finding the Fourth Proportional to 12,379,635.40, 18,569,453.10 and 7,844,672.20

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Solution

The fourth proportional to 12,379,635.40, 18,569,453.10 and 7,844,672.20 is: 11,767,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379,635.40 : 18,569,453.10 = 7,844,672.20 : x
  2. Step 2: Convert to fraction form
    12,379,635.40/18,569,453.10 = 7,844,672.20/x
  3. Step 3: Cross multiply
    12,379,635.40x = 18,569,453.10 × 7,844,672.20
  4. Step 4: Simplify right side
    12,379,635.40x = 145,671,272,502,773.84
  5. Step 5: Solve for x
    x = 145,671,272,502,773.84/12,379,635.40
  6. Step 6: Final answer
    x = 11,767,008.30

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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.