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Finding the Fourth Proportional to 28,993.88, 43,505.42 and 21,613.16

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Solution

The fourth proportional to 28,993.88, 43,505.42 and 21,613.16 is: 32,430.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.88 : 43,505.42 = 21,613.16 : x
  2. Step 2: Convert to fraction form
    28,993.88/43,505.42 = 21,613.16/x
  3. Step 3: Cross multiply
    28,993.88x = 43,505.42 × 21,613.16
  4. Step 4: Simplify right side
    28,993.88x = 940,289,603.33
  5. Step 5: Solve for x
    x = 940,289,603.33/28,993.88
  6. Step 6: Final answer
    x = 32,430.62

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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.