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Finding the Fourth Proportional to 15,085.92, 22,605.78 and 7,679.28

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Solution

The fourth proportional to 15,085.92, 22,605.78 and 7,679.28 is: 11,507.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.92 : 22,605.78 = 7,679.28 : x
  2. Step 2: Convert to fraction form
    15,085.92/22,605.78 = 7,679.28/x
  3. Step 3: Cross multiply
    15,085.92x = 22,605.78 × 7,679.28
  4. Step 4: Simplify right side
    15,085.92x = 173,596,114.24
  5. Step 5: Solve for x
    x = 173,596,114.24/15,085.92
  6. Step 6: Final answer
    x = 11,507.16

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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.