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Finding the Fourth Proportional to 18,829.26, 28,248.60 and 13,293.42

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Solution

The fourth proportional to 18,829.26, 28,248.60 and 13,293.42 is: 19,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.26 : 28,248.60 = 13,293.42 : x
  2. Step 2: Convert to fraction form
    18,829.26/28,248.60 = 13,293.42/x
  3. Step 3: Cross multiply
    18,829.26x = 28,248.60 × 13,293.42
  4. Step 4: Simplify right side
    18,829.26x = 375,520,373.35
  5. Step 5: Solve for x
    x = 375,520,373.35/18,829.26
  6. Step 6: Final answer
    x = 19,943.45

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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.