Home / 12,845.86-19,255.74-8,686.34

Finding the Fourth Proportional to 12,845.86, 19,255.74 and 8,686.34

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Solution

The fourth proportional to 12,845.86, 19,255.74 and 8,686.34 is: 13,020.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.86 : 19,255.74 = 8,686.34 : x
  2. Step 2: Convert to fraction form
    12,845.86/19,255.74 = 8,686.34/x
  3. Step 3: Cross multiply
    12,845.86x = 19,255.74 × 8,686.34
  4. Step 4: Simplify right side
    12,845.86x = 167,261,952.73
  5. Step 5: Solve for x
    x = 167,261,952.73/12,845.86
  6. Step 6: Final answer
    x = 13,020.69

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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.