Home / 12,289.29-16,959.62-6,912.66

Finding the Fourth Proportional to 12,289.29, 16,959.62 and 6,912.66

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Solution

The fourth proportional to 12,289.29, 16,959.62 and 6,912.66 is: 9,539.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.29 : 16,959.62 = 6,912.66 : x
  2. Step 2: Convert to fraction form
    12,289.29/16,959.62 = 6,912.66/x
  3. Step 3: Cross multiply
    12,289.29x = 16,959.62 × 6,912.66
  4. Step 4: Simplify right side
    12,289.29x = 117,235,967.43
  5. Step 5: Solve for x
    x = 117,235,967.43/12,289.29
  6. Step 6: Final answer
    x = 9,539.69

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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.