Home / 12,147.76-18,208.66-8,674.48

Finding the Fourth Proportional to 12,147.76, 18,208.66 and 8,674.48

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Solution

The fourth proportional to 12,147.76, 18,208.66 and 8,674.48 is: 13,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.76 : 18,208.66 = 8,674.48 : x
  2. Step 2: Convert to fraction form
    12,147.76/18,208.66 = 8,674.48/x
  3. Step 3: Cross multiply
    12,147.76x = 18,208.66 × 8,674.48
  4. Step 4: Simplify right side
    12,147.76x = 157,950,657.00
  5. Step 5: Solve for x
    x = 157,950,657.00/12,147.76
  6. Step 6: Final answer
    x = 13,002.45

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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.