Home / 12,480.78-17,219.35-8,233.95

Finding the Fourth Proportional to 12,480.78, 17,219.35 and 8,233.95

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Solution

The fourth proportional to 12,480.78, 17,219.35 and 8,233.95 is: 11,360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.78 : 17,219.35 = 8,233.95 : x
  2. Step 2: Convert to fraction form
    12,480.78/17,219.35 = 8,233.95/x
  3. Step 3: Cross multiply
    12,480.78x = 17,219.35 × 8,233.95
  4. Step 4: Simplify right side
    12,480.78x = 141,783,266.93
  5. Step 5: Solve for x
    x = 141,783,266.93/12,480.78
  6. Step 6: Final answer
    x = 11,360.13

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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.