Home / 10,520,100.78-15,781,049.66-3,696,081.22

Finding the Fourth Proportional to 10,520,100.78, 15,781,049.66 and 3,696,081.22

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Solution

The fourth proportional to 10,520,100.78, 15,781,049.66 and 3,696,081.22 is: 5,544,437.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520,100.78 : 15,781,049.66 = 3,696,081.22 : x
  2. Step 2: Convert to fraction form
    10,520,100.78/15,781,049.66 = 3,696,081.22/x
  3. Step 3: Cross multiply
    10,520,100.78x = 15,781,049.66 × 3,696,081.22
  4. Step 4: Simplify right side
    10,520,100.78x = 58,328,041,280,213.39
  5. Step 5: Solve for x
    x = 58,328,041,280,213.39/10,520,100.78
  6. Step 6: Final answer
    x = 5,544,437.50

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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.