Home / 12,918.06-19,377.09-3,558.15

Finding the Fourth Proportional to 12,918.06, 19,377.09 and 3,558.15

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Solution

The fourth proportional to 12,918.06, 19,377.09 and 3,558.15 is: 5,337.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.06 : 19,377.09 = 3,558.15 : x
  2. Step 2: Convert to fraction form
    12,918.06/19,377.09 = 3,558.15/x
  3. Step 3: Cross multiply
    12,918.06x = 19,377.09 × 3,558.15
  4. Step 4: Simplify right side
    12,918.06x = 68,946,592.78
  5. Step 5: Solve for x
    x = 68,946,592.78/12,918.06
  6. Step 6: Final answer
    x = 5,337.23

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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.