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Finding the Fourth Proportional to 28,921.66, 43,382.49 and 9,200.23

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Solution

The fourth proportional to 28,921.66, 43,382.49 and 9,200.23 is: 13,800.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.66 : 43,382.49 = 9,200.23 : x
  2. Step 2: Convert to fraction form
    28,921.66/43,382.49 = 9,200.23/x
  3. Step 3: Cross multiply
    28,921.66x = 43,382.49 × 9,200.23
  4. Step 4: Simplify right side
    28,921.66x = 399,128,987.04
  5. Step 5: Solve for x
    x = 399,128,987.04/28,921.66
  6. Step 6: Final answer
    x = 13,800.35

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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.