Home / 12,478,108.50-18,663,129.26-7,348,310.46

Finding the Fourth Proportional to 12,478,108.50, 18,663,129.26 and 7,348,310.46

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Solution

The fourth proportional to 12,478,108.50, 18,663,129.26 and 7,348,310.46 is: 10,990,645.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,108.50 : 18,663,129.26 = 7,348,310.46 : x
  2. Step 2: Convert to fraction form
    12,478,108.50/18,663,129.26 = 7,348,310.46/x
  3. Step 3: Cross multiply
    12,478,108.50x = 18,663,129.26 × 7,348,310.46
  4. Step 4: Simplify right side
    12,478,108.50x = 137,142,467,957,590.08
  5. Step 5: Solve for x
    x = 137,142,467,957,590.08/12,478,108.50
  6. Step 6: Final answer
    x = 10,990,645.57

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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.