Home / 12,479.03-17,220.78-6,813.56

Finding the Fourth Proportional to 12,479.03, 17,220.78 and 6,813.56

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Solution

The fourth proportional to 12,479.03, 17,220.78 and 6,813.56 is: 9,402.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.03 : 17,220.78 = 6,813.56 : x
  2. Step 2: Convert to fraction form
    12,479.03/17,220.78 = 6,813.56/x
  3. Step 3: Cross multiply
    12,479.03x = 17,220.78 × 6,813.56
  4. Step 4: Simplify right side
    12,479.03x = 117,334,817.78
  5. Step 5: Solve for x
    x = 117,334,817.78/12,479.03
  6. Step 6: Final answer
    x = 9,402.56

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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.