Home / 12,146,250.40-18,219,375.60-7,678,333.60

Finding the Fourth Proportional to 12,146,250.40, 18,219,375.60 and 7,678,333.60

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Solution

The fourth proportional to 12,146,250.40, 18,219,375.60 and 7,678,333.60 is: 11,517,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146,250.40 : 18,219,375.60 = 7,678,333.60 : x
  2. Step 2: Convert to fraction form
    12,146,250.40/18,219,375.60 = 7,678,333.60/x
  3. Step 3: Cross multiply
    12,146,250.40x = 18,219,375.60 × 7,678,333.60
  4. Step 4: Simplify right side
    12,146,250.40x = 139,894,443,840,500.17
  5. Step 5: Solve for x
    x = 139,894,443,840,500.17/12,146,250.40
  6. Step 6: Final answer
    x = 11,517,500.40

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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.