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Finding the Fourth Proportional to 28,435.22, 42,661.71 and 8,444.82

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Solution

The fourth proportional to 28,435.22, 42,661.71 and 8,444.82 is: 12,669.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.22 : 42,661.71 = 8,444.82 : x
  2. Step 2: Convert to fraction form
    28,435.22/42,661.71 = 8,444.82/x
  3. Step 3: Cross multiply
    28,435.22x = 42,661.71 × 8,444.82
  4. Step 4: Simplify right side
    28,435.22x = 360,270,419.62
  5. Step 5: Solve for x
    x = 360,270,419.62/28,435.22
  6. Step 6: Final answer
    x = 12,669.87

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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.