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Finding the Fourth Proportional to 28,044.21, 42,057.22 and 9,319.22

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Solution

The fourth proportional to 28,044.21, 42,057.22 and 9,319.22 is: 13,975.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,044.21 : 42,057.22 = 9,319.22 : x
  2. Step 2: Convert to fraction form
    28,044.21/42,057.22 = 9,319.22/x
  3. Step 3: Cross multiply
    28,044.21x = 42,057.22 × 9,319.22
  4. Step 4: Simplify right side
    28,044.21x = 391,940,485.77
  5. Step 5: Solve for x
    x = 391,940,485.77/28,044.21
  6. Step 6: Final answer
    x = 13,975.81

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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.