Home / 12,285,971.60-18,442,954.20-7,240,125.20

Finding the Fourth Proportional to 12,285,971.60, 18,442,954.20 and 7,240,125.20

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Solution

The fourth proportional to 12,285,971.60, 18,442,954.20 and 7,240,125.20 is: 10,868,436.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285,971.60 : 18,442,954.20 = 7,240,125.20 : x
  2. Step 2: Convert to fraction form
    12,285,971.60/18,442,954.20 = 7,240,125.20/x
  3. Step 3: Cross multiply
    12,285,971.60x = 18,442,954.20 × 7,240,125.20
  4. Step 4: Simplify right side
    12,285,971.60x = 133,529,297,465,865.84
  5. Step 5: Solve for x
    x = 133,529,297,465,865.84/12,285,971.60
  6. Step 6: Final answer
    x = 10,868,436.12

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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.