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Finding the Fourth Proportional to 28,164.51, 42,253.42 and 9,189.04

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Solution

The fourth proportional to 28,164.51, 42,253.42 and 9,189.04 is: 13,785.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.51 : 42,253.42 = 9,189.04 : x
  2. Step 2: Convert to fraction form
    28,164.51/42,253.42 = 9,189.04/x
  3. Step 3: Cross multiply
    28,164.51x = 42,253.42 × 9,189.04
  4. Step 4: Simplify right side
    28,164.51x = 388,268,366.52
  5. Step 5: Solve for x
    x = 388,268,366.52/28,164.51
  6. Step 6: Final answer
    x = 13,785.73

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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.