Home / 20,724.50-28,599.82-11,293.06

Finding the Fourth Proportional to 20,724.50, 28,599.82 and 11,293.06

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Solution

The fourth proportional to 20,724.50, 28,599.82 and 11,293.06 is: 15,584.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.50 : 28,599.82 = 11,293.06 : x
  2. Step 2: Convert to fraction form
    20,724.50/28,599.82 = 11,293.06/x
  3. Step 3: Cross multiply
    20,724.50x = 28,599.82 × 11,293.06
  4. Step 4: Simplify right side
    20,724.50x = 322,979,483.25
  5. Step 5: Solve for x
    x = 322,979,483.25/20,724.50
  6. Step 6: Final answer
    x = 15,584.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.