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Finding the Fourth Proportional to 12,518.76, 18,780.76 and 4,727.52

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Solution

The fourth proportional to 12,518.76, 18,780.76 and 4,727.52 is: 7,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.76 : 18,780.76 = 4,727.52 : x
  2. Step 2: Convert to fraction form
    12,518.76/18,780.76 = 4,727.52/x
  3. Step 3: Cross multiply
    12,518.76x = 18,780.76 × 4,727.52
  4. Step 4: Simplify right side
    12,518.76x = 88,786,418.52
  5. Step 5: Solve for x
    x = 88,786,418.52/12,518.76
  6. Step 6: Final answer
    x = 7,092.27

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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.