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Finding the Fourth Proportional to 28,933.10, 43,399.65 and 9,213.65

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Solution

The fourth proportional to 28,933.10, 43,399.65 and 9,213.65 is: 13,820.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,933.10 : 43,399.65 = 9,213.65 : x
  2. Step 2: Convert to fraction form
    28,933.10/43,399.65 = 9,213.65/x
  3. Step 3: Cross multiply
    28,933.10x = 43,399.65 × 9,213.65
  4. Step 4: Simplify right side
    28,933.10x = 399,869,185.22
  5. Step 5: Solve for x
    x = 399,869,185.22/28,933.10
  6. Step 6: Final answer
    x = 13,820.48

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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.