Home / 12,860.67-19,277.85-8,701.12

Finding the Fourth Proportional to 12,860.67, 19,277.85 and 8,701.12

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Solution

The fourth proportional to 12,860.67, 19,277.85 and 8,701.12 is: 13,042.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.67 : 19,277.85 = 8,701.12 : x
  2. Step 2: Convert to fraction form
    12,860.67/19,277.85 = 8,701.12/x
  3. Step 3: Cross multiply
    12,860.67x = 19,277.85 × 8,701.12
  4. Step 4: Simplify right side
    12,860.67x = 167,738,893.97
  5. Step 5: Solve for x
    x = 167,738,893.97/12,860.67
  6. Step 6: Final answer
    x = 13,042.78

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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.