Home / 12,128,812.20-18,193,218.30-10,302,229.80

Finding the Fourth Proportional to 12,128,812.20, 18,193,218.30 and 10,302,229.80

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Solution

The fourth proportional to 12,128,812.20, 18,193,218.30 and 10,302,229.80 is: 15,453,344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,812.20 : 18,193,218.30 = 10,302,229.80 : x
  2. Step 2: Convert to fraction form
    12,128,812.20/18,193,218.30 = 10,302,229.80/x
  3. Step 3: Cross multiply
    12,128,812.20x = 18,193,218.30 × 10,302,229.80
  4. Step 4: Simplify right side
    12,128,812.20x = 187,430,715,728,165.38
  5. Step 5: Solve for x
    x = 187,430,715,728,165.38/12,128,812.20
  6. Step 6: Final answer
    x = 15,453,344.70

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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.