Home / 20,508.78-30,752.22-10,623.54

Finding the Fourth Proportional to 20,508.78, 30,752.22 and 10,623.54

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Solution

The fourth proportional to 20,508.78, 30,752.22 and 10,623.54 is: 15,929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.78 : 30,752.22 = 10,623.54 : x
  2. Step 2: Convert to fraction form
    20,508.78/30,752.22 = 10,623.54/x
  3. Step 3: Cross multiply
    20,508.78x = 30,752.22 × 10,623.54
  4. Step 4: Simplify right side
    20,508.78x = 326,697,439.26
  5. Step 5: Solve for x
    x = 326,697,439.26/20,508.78
  6. Step 6: Final answer
    x = 15,929.64

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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.