Home / 12,479.08-17,220.58-6,889.96

Finding the Fourth Proportional to 12,479.08, 17,220.58 and 6,889.96

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Solution

The fourth proportional to 12,479.08, 17,220.58 and 6,889.96 is: 9,507.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.08 : 17,220.58 = 6,889.96 : x
  2. Step 2: Convert to fraction form
    12,479.08/17,220.58 = 6,889.96/x
  3. Step 3: Cross multiply
    12,479.08x = 17,220.58 × 6,889.96
  4. Step 4: Simplify right side
    12,479.08x = 118,649,107.38
  5. Step 5: Solve for x
    x = 118,649,107.38/12,479.08
  6. Step 6: Final answer
    x = 9,507.84

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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.