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Finding the Fourth Proportional to 13,963.35, 20,948.93 and 5,649.21

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Solution

The fourth proportional to 13,963.35, 20,948.93 and 5,649.21 is: 8,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,963.35 : 20,948.93 = 5,649.21 : x
  2. Step 2: Convert to fraction form
    13,963.35/20,948.93 = 5,649.21/x
  3. Step 3: Cross multiply
    13,963.35x = 20,948.93 × 5,649.21
  4. Step 4: Simplify right side
    13,963.35x = 118,344,904.85
  5. Step 5: Solve for x
    x = 118,344,904.85/13,963.35
  6. Step 6: Final answer
    x = 8,475.39

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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.