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Finding the Fourth Proportional to 18,182.88, 27,279.52 and 7,647.52

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Solution

The fourth proportional to 18,182.88, 27,279.52 and 7,647.52 is: 11,473.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,182.88 : 27,279.52 = 7,647.52 : x
  2. Step 2: Convert to fraction form
    18,182.88/27,279.52 = 7,647.52/x
  3. Step 3: Cross multiply
    18,182.88x = 27,279.52 × 7,647.52
  4. Step 4: Simplify right side
    18,182.88x = 208,620,674.79
  5. Step 5: Solve for x
    x = 208,620,674.79/18,182.88
  6. Step 6: Final answer
    x = 11,473.47

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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.