Home / 13,580.27-18,741.32-7,611.90

Finding the Fourth Proportional to 13,580.27, 18,741.32 and 7,611.90

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Solution

The fourth proportional to 13,580.27, 18,741.32 and 7,611.90 is: 10,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.27 : 18,741.32 = 7,611.90 : x
  2. Step 2: Convert to fraction form
    13,580.27/18,741.32 = 7,611.90/x
  3. Step 3: Cross multiply
    13,580.27x = 18,741.32 × 7,611.90
  4. Step 4: Simplify right side
    13,580.27x = 142,657,053.71
  5. Step 5: Solve for x
    x = 142,657,053.71/13,580.27
  6. Step 6: Final answer
    x = 10,504.73

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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.