Home / 28,855.91-43,279.54-9,131.92

Finding the Fourth Proportional to 28,855.91, 43,279.54 and 9,131.92

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Solution

The fourth proportional to 28,855.91, 43,279.54 and 9,131.92 is: 13,696.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.91 : 43,279.54 = 9,131.92 : x
  2. Step 2: Convert to fraction form
    28,855.91/43,279.54 = 9,131.92/x
  3. Step 3: Cross multiply
    28,855.91x = 43,279.54 × 9,131.92
  4. Step 4: Simplify right side
    28,855.91x = 395,225,165.89
  5. Step 5: Solve for x
    x = 395,225,165.89/28,855.91
  6. Step 6: Final answer
    x = 13,696.51

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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.