Home / 12,874.99-19,307.39-8,716.20

Finding the Fourth Proportional to 12,874.99, 19,307.39 and 8,716.20

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Solution

The fourth proportional to 12,874.99, 19,307.39 and 8,716.20 is: 13,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,874.99 : 19,307.39 = 8,716.20 : x
  2. Step 2: Convert to fraction form
    12,874.99/19,307.39 = 8,716.20/x
  3. Step 3: Cross multiply
    12,874.99x = 19,307.39 × 8,716.20
  4. Step 4: Simplify right side
    12,874.99x = 168,287,072.72
  5. Step 5: Solve for x
    x = 168,287,072.72/12,874.99
  6. Step 6: Final answer
    x = 13,070.85

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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.