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Finding the Fourth Proportional to 28,853.41, 43,275.79 and 9,129.41

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Solution

The fourth proportional to 28,853.41, 43,275.79 and 9,129.41 is: 13,692.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,853.41 : 43,275.79 = 9,129.41 : x
  2. Step 2: Convert to fraction form
    28,853.41/43,275.79 = 9,129.41/x
  3. Step 3: Cross multiply
    28,853.41x = 43,275.79 × 9,129.41
  4. Step 4: Simplify right side
    28,853.41x = 395,082,429.98
  5. Step 5: Solve for x
    x = 395,082,429.98/28,853.41
  6. Step 6: Final answer
    x = 13,692.75

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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.