Home / 13,487.24-18,612.06-7,518.90

Finding the Fourth Proportional to 13,487.24, 18,612.06 and 7,518.90

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Solution

The fourth proportional to 13,487.24, 18,612.06 and 7,518.90 is: 10,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.24 : 18,612.06 = 7,518.90 : x
  2. Step 2: Convert to fraction form
    13,487.24/18,612.06 = 7,518.90/x
  3. Step 3: Cross multiply
    13,487.24x = 18,612.06 × 7,518.90
  4. Step 4: Simplify right side
    13,487.24x = 139,942,217.93
  5. Step 5: Solve for x
    x = 139,942,217.93/13,487.24
  6. Step 6: Final answer
    x = 10,375.90

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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.