Home / 10,418.78-15,612.50-4,172.60

Finding the Fourth Proportional to 10,418.78, 15,612.50 and 4,172.60

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Solution

The fourth proportional to 10,418.78, 15,612.50 and 4,172.60 is: 6,252.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.78 : 15,612.50 = 4,172.60 : x
  2. Step 2: Convert to fraction form
    10,418.78/15,612.50 = 4,172.60/x
  3. Step 3: Cross multiply
    10,418.78x = 15,612.50 × 4,172.60
  4. Step 4: Simplify right side
    10,418.78x = 65,144,717.50
  5. Step 5: Solve for x
    x = 65,144,717.50/10,418.78
  6. Step 6: Final answer
    x = 6,252.62

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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.