Home / 15,200.96-20,976.54-11,220.62

Finding the Fourth Proportional to 15,200.96, 20,976.54 and 11,220.62

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Solution

The fourth proportional to 15,200.96, 20,976.54 and 11,220.62 is: 15,483.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.96 : 20,976.54 = 11,220.62 : x
  2. Step 2: Convert to fraction form
    15,200.96/20,976.54 = 11,220.62/x
  3. Step 3: Cross multiply
    15,200.96x = 20,976.54 × 11,220.62
  4. Step 4: Simplify right side
    15,200.96x = 235,369,784.25
  5. Step 5: Solve for x
    x = 235,369,784.25/15,200.96
  6. Step 6: Final answer
    x = 15,483.88

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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.