Home / 20,724.45-28,599.72-11,293.02

Finding the Fourth Proportional to 20,724.45, 28,599.72 and 11,293.02

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Solution

The fourth proportional to 20,724.45, 28,599.72 and 11,293.02 is: 15,584.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.45 : 28,599.72 = 11,293.02 : x
  2. Step 2: Convert to fraction form
    20,724.45/28,599.72 = 11,293.02/x
  3. Step 3: Cross multiply
    20,724.45x = 28,599.72 × 11,293.02
  4. Step 4: Simplify right side
    20,724.45x = 322,977,209.95
  5. Step 5: Solve for x
    x = 322,977,209.95/20,724.45
  6. Step 6: Final answer
    x = 15,584.36

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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.