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Finding the Fourth Proportional to 28,227.89, 42,341.86 and 7,169.51

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Solution

The fourth proportional to 28,227.89, 42,341.86 and 7,169.51 is: 10,754.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.89 : 42,341.86 = 7,169.51 : x
  2. Step 2: Convert to fraction form
    28,227.89/42,341.86 = 7,169.51/x
  3. Step 3: Cross multiply
    28,227.89x = 42,341.86 × 7,169.51
  4. Step 4: Simplify right side
    28,227.89x = 303,570,463.18
  5. Step 5: Solve for x
    x = 303,570,463.18/28,227.89
  6. Step 6: Final answer
    x = 10,754.27

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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.