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Finding the Fourth Proportional to 13,903.17, 20,854.67 and 3,514.92

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Solution

The fourth proportional to 13,903.17, 20,854.67 and 3,514.92 is: 5,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.17 : 20,854.67 = 3,514.92 : x
  2. Step 2: Convert to fraction form
    13,903.17/20,854.67 = 3,514.92/x
  3. Step 3: Cross multiply
    13,903.17x = 20,854.67 × 3,514.92
  4. Step 4: Simplify right side
    13,903.17x = 73,302,479.10
  5. Step 5: Solve for x
    x = 73,302,479.10/13,903.17
  6. Step 6: Final answer
    x = 5,272.36

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1.5x scale

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.