Home / 20,697.64-28,512.06-15,015.62

Finding the Fourth Proportional to 20,697.64, 28,512.06 and 15,015.62

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Solution

The fourth proportional to 20,697.64, 28,512.06 and 15,015.62 is: 20,684.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.64 : 28,512.06 = 15,015.62 : x
  2. Step 2: Convert to fraction form
    20,697.64/28,512.06 = 15,015.62/x
  3. Step 3: Cross multiply
    20,697.64x = 28,512.06 × 15,015.62
  4. Step 4: Simplify right side
    20,697.64x = 428,126,258.38
  5. Step 5: Solve for x
    x = 428,126,258.38/20,697.64
  6. Step 6: Final answer
    x = 20,684.79

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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.