Home / 13,487.04-18,611.64-7,518.96

Finding the Fourth Proportional to 13,487.04, 18,611.64 and 7,518.96

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Solution

The fourth proportional to 13,487.04, 18,611.64 and 7,518.96 is: 10,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.04 : 18,611.64 = 7,518.96 : x
  2. Step 2: Convert to fraction form
    13,487.04/18,611.64 = 7,518.96/x
  3. Step 3: Cross multiply
    13,487.04x = 18,611.64 × 7,518.96
  4. Step 4: Simplify right side
    13,487.04x = 139,940,176.69
  5. Step 5: Solve for x
    x = 139,940,176.69/13,487.04
  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.