Home / 12,117,640.70-18,167,421.45-7,324,319.90

Finding the Fourth Proportional to 12,117,640.70, 18,167,421.45 and 7,324,319.90

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Solution

The fourth proportional to 12,117,640.70, 18,167,421.45 and 7,324,319.90 is: 10,981,016.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117,640.70 : 18,167,421.45 = 7,324,319.90 : x
  2. Step 2: Convert to fraction form
    12,117,640.70/18,167,421.45 = 7,324,319.90/x
  3. Step 3: Cross multiply
    12,117,640.70x = 18,167,421.45 × 7,324,319.90
  4. Step 4: Simplify right side
    12,117,640.70x = 133,064,006,457,921.86
  5. Step 5: Solve for x
    x = 133,064,006,457,921.86/12,117,640.70
  6. Step 6: Final answer
    x = 10,981,016.00

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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.