Home / 12,422.52-17,143.51-7,118.35

Finding the Fourth Proportional to 12,422.52, 17,143.51 and 7,118.35

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Solution

The fourth proportional to 12,422.52, 17,143.51 and 7,118.35 is: 9,823.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.52 : 17,143.51 = 7,118.35 : x
  2. Step 2: Convert to fraction form
    12,422.52/17,143.51 = 7,118.35/x
  3. Step 3: Cross multiply
    12,422.52x = 17,143.51 × 7,118.35
  4. Step 4: Simplify right side
    12,422.52x = 122,033,504.41
  5. Step 5: Solve for x
    x = 122,033,504.41/12,422.52
  6. Step 6: Final answer
    x = 9,823.57

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Double scale
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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.