Home / 20,611.48-28,470.54-15,244.83

Finding the Fourth Proportional to 20,611.48, 28,470.54 and 15,244.83

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Solution

The fourth proportional to 20,611.48, 28,470.54 and 15,244.83 is: 21,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.48 : 28,470.54 = 15,244.83 : x
  2. Step 2: Convert to fraction form
    20,611.48/28,470.54 = 15,244.83/x
  3. Step 3: Cross multiply
    20,611.48x = 28,470.54 × 15,244.83
  4. Step 4: Simplify right side
    20,611.48x = 434,028,323.73
  5. Step 5: Solve for x
    x = 434,028,323.73/20,611.48
  6. Step 6: Final answer
    x = 21,057.60

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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.