Home / 13,486.67-18,612.41-7,518.33

Finding the Fourth Proportional to 13,486.67, 18,612.41 and 7,518.33

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Solution

The fourth proportional to 13,486.67, 18,612.41 and 7,518.33 is: 10,375.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.67 : 18,612.41 = 7,518.33 : x
  2. Step 2: Convert to fraction form
    13,486.67/18,612.41 = 7,518.33/x
  3. Step 3: Cross multiply
    13,486.67x = 18,612.41 × 7,518.33
  4. Step 4: Simplify right side
    13,486.67x = 139,934,240.48
  5. Step 5: Solve for x
    x = 139,934,240.48/13,486.67
  6. Step 6: Final answer
    x = 10,375.74

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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.