Home / 12,520,343.70-18,781,784.01-4,321,917.36

Finding the Fourth Proportional to 12,520,343.70, 18,781,784.01 and 4,321,917.36

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Solution

The fourth proportional to 12,520,343.70, 18,781,784.01 and 4,321,917.36 is: 6,483,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520,343.70 : 18,781,784.01 = 4,321,917.36 : x
  2. Step 2: Convert to fraction form
    12,520,343.70/18,781,784.01 = 4,321,917.36/x
  3. Step 3: Cross multiply
    12,520,343.70x = 18,781,784.01 × 4,321,917.36
  4. Step 4: Simplify right side
    12,520,343.70x = 81,173,318,364,589.42
  5. Step 5: Solve for x
    x = 81,173,318,364,589.42/12,520,343.70
  6. Step 6: Final answer
    x = 6,483,313.90

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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.