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Finding the Fourth Proportional to 28,169.51, 42,251.51 and 7,393.01

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Solution

The fourth proportional to 28,169.51, 42,251.51 and 7,393.01 is: 11,088.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.51 : 42,251.51 = 7,393.01 : x
  2. Step 2: Convert to fraction form
    28,169.51/42,251.51 = 7,393.01/x
  3. Step 3: Cross multiply
    28,169.51x = 42,251.51 × 7,393.01
  4. Step 4: Simplify right side
    28,169.51x = 312,365,730.32
  5. Step 5: Solve for x
    x = 312,365,730.32/28,169.51
  6. Step 6: Final answer
    x = 11,088.79

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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.