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Finding the Fourth Proportional to 15,085.72, 22,621.74 and 7,694.20

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Solution

The fourth proportional to 15,085.72, 22,621.74 and 7,694.20 is: 11,537.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.72 : 22,621.74 = 7,694.20 : x
  2. Step 2: Convert to fraction form
    15,085.72/22,621.74 = 7,694.20/x
  3. Step 3: Cross multiply
    15,085.72x = 22,621.74 × 7,694.20
  4. Step 4: Simplify right side
    15,085.72x = 174,056,191.91
  5. Step 5: Solve for x
    x = 174,056,191.91/15,085.72
  6. Step 6: Final answer
    x = 11,537.81

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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.