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Finding the Fourth Proportional to 13,616.48, 20,419.48 and 5,295.39

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Solution

The fourth proportional to 13,616.48, 20,419.48 and 5,295.39 is: 7,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.48 : 20,419.48 = 5,295.39 : x
  2. Step 2: Convert to fraction form
    13,616.48/20,419.48 = 5,295.39/x
  3. Step 3: Cross multiply
    13,616.48x = 20,419.48 × 5,295.39
  4. Step 4: Simplify right side
    13,616.48x = 108,128,981.62
  5. Step 5: Solve for x
    x = 108,128,981.62/13,616.48
  6. Step 6: Final answer
    x = 7,941.04

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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.