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Finding the Fourth Proportional to 28,231.51, 42,350.10 and 7,455.01

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Solution

The fourth proportional to 28,231.51, 42,350.10 and 7,455.01 is: 11,183.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.51 : 42,350.10 = 7,455.01 : x
  2. Step 2: Convert to fraction form
    28,231.51/42,350.10 = 7,455.01/x
  3. Step 3: Cross multiply
    28,231.51x = 42,350.10 × 7,455.01
  4. Step 4: Simplify right side
    28,231.51x = 315,720,419.00
  5. Step 5: Solve for x
    x = 315,720,419.00/28,231.51
  6. Step 6: Final answer
    x = 11,183.26

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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.