Home / 13,479.94-18,603.21-7,512.58

Finding the Fourth Proportional to 13,479.94, 18,603.21 and 7,512.58

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Solution

The fourth proportional to 13,479.94, 18,603.21 and 7,512.58 is: 10,367.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.94 : 18,603.21 = 7,512.58 : x
  2. Step 2: Convert to fraction form
    13,479.94/18,603.21 = 7,512.58/x
  3. Step 3: Cross multiply
    13,479.94x = 18,603.21 × 7,512.58
  4. Step 4: Simplify right side
    13,479.94x = 139,758,103.38
  5. Step 5: Solve for x
    x = 139,758,103.38/13,479.94
  6. Step 6: Final answer
    x = 10,367.86

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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.