Home / 20,724.76-28,600.12-11,293.32

Finding the Fourth Proportional to 20,724.76, 28,600.12 and 11,293.32

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Solution

The fourth proportional to 20,724.76, 28,600.12 and 11,293.32 is: 15,584.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.76 : 28,600.12 = 11,293.32 : x
  2. Step 2: Convert to fraction form
    20,724.76/28,600.12 = 11,293.32/x
  3. Step 3: Cross multiply
    20,724.76x = 28,600.12 × 11,293.32
  4. Step 4: Simplify right side
    20,724.76x = 322,990,307.20
  5. Step 5: Solve for x
    x = 322,990,307.20/20,724.76
  6. Step 6: Final answer
    x = 15,584.76

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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.