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Finding the Fourth Proportional to 28,499.66, 42,749.48 and 7,723.16

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Solution

The fourth proportional to 28,499.66, 42,749.48 and 7,723.16 is: 11,584.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.66 : 42,749.48 = 7,723.16 : x
  2. Step 2: Convert to fraction form
    28,499.66/42,749.48 = 7,723.16/x
  3. Step 3: Cross multiply
    28,499.66x = 42,749.48 × 7,723.16
  4. Step 4: Simplify right side
    28,499.66x = 330,161,073.96
  5. Step 5: Solve for x
    x = 330,161,073.96/28,499.66
  6. Step 6: Final answer
    x = 11,584.74

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Similar ratio
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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.