Home / 28,764.28-43,146.06-7,987.60

Finding the Fourth Proportional to 28,764.28, 43,146.06 and 7,987.60

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Solution

The fourth proportional to 28,764.28, 43,146.06 and 7,987.60 is: 11,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,764.28 : 43,146.06 = 7,987.60 : x
  2. Step 2: Convert to fraction form
    28,764.28/43,146.06 = 7,987.60/x
  3. Step 3: Cross multiply
    28,764.28x = 43,146.06 × 7,987.60
  4. Step 4: Simplify right side
    28,764.28x = 344,633,468.86
  5. Step 5: Solve for x
    x = 344,633,468.86/28,764.28
  6. Step 6: Final answer
    x = 11,981.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.