Home / 12,529,339.40-18,778,845.90-5,325,750.20

Finding the Fourth Proportional to 12,529,339.40, 18,778,845.90 and 5,325,750.20

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Solution

The fourth proportional to 12,529,339.40, 18,778,845.90 and 5,325,750.20 is: 7,982,179.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529,339.40 : 18,778,845.90 = 5,325,750.20 : x
  2. Step 2: Convert to fraction form
    12,529,339.40/18,778,845.90 = 5,325,750.20/x
  3. Step 3: Cross multiply
    12,529,339.40x = 18,778,845.90 × 5,325,750.20
  4. Step 4: Simplify right side
    12,529,339.40x = 100,011,442,307,694.17
  5. Step 5: Solve for x
    x = 100,011,442,307,694.17/12,529,339.40
  6. Step 6: Final answer
    x = 7,982,179.99

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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.