Home / 13,487.14-18,612.26-7,518.68

Finding the Fourth Proportional to 13,487.14, 18,612.26 and 7,518.68

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Solution

The fourth proportional to 13,487.14, 18,612.26 and 7,518.68 is: 10,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.14 : 18,612.26 = 7,518.68 : x
  2. Step 2: Convert to fraction form
    13,487.14/18,612.26 = 7,518.68/x
  3. Step 3: Cross multiply
    13,487.14x = 18,612.26 × 7,518.68
  4. Step 4: Simplify right side
    13,487.14x = 139,939,673.55
  5. Step 5: Solve for x
    x = 139,939,673.55/13,487.14
  6. Step 6: Final answer
    x = 10,375.78

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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.