Home / 13,487.55-18,611.85-7,519.56

Finding the Fourth Proportional to 13,487.55, 18,611.85 and 7,519.56

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Solution

The fourth proportional to 13,487.55, 18,611.85 and 7,519.56 is: 10,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.55 : 18,611.85 = 7,519.56 : x
  2. Step 2: Convert to fraction form
    13,487.55/18,611.85 = 7,519.56/x
  3. Step 3: Cross multiply
    13,487.55x = 18,611.85 × 7,519.56
  4. Step 4: Simplify right side
    13,487.55x = 139,952,922.79
  5. Step 5: Solve for x
    x = 139,952,922.79/13,487.55
  6. Step 6: Final answer
    x = 10,376.45

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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.