Home / 20,411.91-30,629.68-8,564.63

Finding the Fourth Proportional to 20,411.91, 30,629.68 and 8,564.63

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Solution

The fourth proportional to 20,411.91, 30,629.68 and 8,564.63 is: 12,851.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.91 : 30,629.68 = 8,564.63 : x
  2. Step 2: Convert to fraction form
    20,411.91/30,629.68 = 8,564.63/x
  3. Step 3: Cross multiply
    20,411.91x = 30,629.68 × 8,564.63
  4. Step 4: Simplify right side
    20,411.91x = 262,331,701.66
  5. Step 5: Solve for x
    x = 262,331,701.66/20,411.91
  6. Step 6: Final answer
    x = 12,851.89

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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.