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Finding the Fourth Proportional to 13,649.52, 20,474.52 and 4,289.36

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Solution

The fourth proportional to 13,649.52, 20,474.52 and 4,289.36 is: 6,434.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.52 : 20,474.52 = 4,289.36 : x
  2. Step 2: Convert to fraction form
    13,649.52/20,474.52 = 4,289.36/x
  3. Step 3: Cross multiply
    13,649.52x = 20,474.52 × 4,289.36
  4. Step 4: Simplify right side
    13,649.52x = 87,822,587.11
  5. Step 5: Solve for x
    x = 87,822,587.11/13,649.52
  6. Step 6: Final answer
    x = 6,434.12

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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.