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Finding the Fourth Proportional to 13,494.52, 20,241.78 and 13,125.52

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Solution

The fourth proportional to 13,494.52, 20,241.78 and 13,125.52 is: 19,688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,494.52 : 20,241.78 = 13,125.52 : x
  2. Step 2: Convert to fraction form
    13,494.52/20,241.78 = 13,125.52/x
  3. Step 3: Cross multiply
    13,494.52x = 20,241.78 × 13,125.52
  4. Step 4: Simplify right side
    13,494.52x = 265,683,888.23
  5. Step 5: Solve for x
    x = 265,683,888.23/13,494.52
  6. Step 6: Final answer
    x = 19,688.28

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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.