Home / 13,581.18-18,741.24-7,611.75

Finding the Fourth Proportional to 13,581.18, 18,741.24 and 7,611.75

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Solution

The fourth proportional to 13,581.18, 18,741.24 and 7,611.75 is: 10,503.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.18 : 18,741.24 = 7,611.75 : x
  2. Step 2: Convert to fraction form
    13,581.18/18,741.24 = 7,611.75/x
  3. Step 3: Cross multiply
    13,581.18x = 18,741.24 × 7,611.75
  4. Step 4: Simplify right side
    13,581.18x = 142,653,633.57
  5. Step 5: Solve for x
    x = 142,653,633.57/13,581.18
  6. Step 6: Final answer
    x = 10,503.77

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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.