Home / 13,580.12-18,741.43-7,611.79

Finding the Fourth Proportional to 13,580.12, 18,741.43 and 7,611.79

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Solution

The fourth proportional to 13,580.12, 18,741.43 and 7,611.79 is: 10,504.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.12 : 18,741.43 = 7,611.79 : x
  2. Step 2: Convert to fraction form
    13,580.12/18,741.43 = 7,611.79/x
  3. Step 3: Cross multiply
    13,580.12x = 18,741.43 × 7,611.79
  4. Step 4: Simplify right side
    13,580.12x = 142,655,708.39
  5. Step 5: Solve for x
    x = 142,655,708.39/13,580.12
  6. Step 6: Final answer
    x = 10,504.75

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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.