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Finding the Fourth Proportional to 12,550.77, 18,820.17 and 4,647.87

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Solution

The fourth proportional to 12,550.77, 18,820.17 and 4,647.87 is: 6,969.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,550.77 : 18,820.17 = 4,647.87 : x
  2. Step 2: Convert to fraction form
    12,550.77/18,820.17 = 4,647.87/x
  3. Step 3: Cross multiply
    12,550.77x = 18,820.17 × 4,647.87
  4. Step 4: Simplify right side
    12,550.77x = 87,473,703.54
  5. Step 5: Solve for x
    x = 87,473,703.54/12,550.77
  6. Step 6: Final answer
    x = 6,969.59

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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.