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Finding the Fourth Proportional to 12,585, 17,367.30 and 6,919.85

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Solution

The fourth proportional to 12,585, 17,367.30 and 6,919.85 is: 9,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585 : 17,367.30 = 6,919.85 : x
  2. Step 2: Convert to fraction form
    12,585/17,367.30 = 6,919.85/x
  3. Step 3: Cross multiply
    12,585x = 17,367.30 × 6,919.85
  4. Step 4: Simplify right side
    12,585x = 120,179,024.07
  5. Step 5: Solve for x
    x = 120,179,024.07/12,585
  6. Step 6: Final answer
    x = 9,549.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.