Home / 13,611.12-20,419.84-5,820.48

Finding the Fourth Proportional to 13,611.12, 20,419.84 and 5,820.48

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Solution

The fourth proportional to 13,611.12, 20,419.84 and 5,820.48 is: 8,732.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.12 : 20,419.84 = 5,820.48 : x
  2. Step 2: Convert to fraction form
    13,611.12/20,419.84 = 5,820.48/x
  3. Step 3: Cross multiply
    13,611.12x = 20,419.84 × 5,820.48
  4. Step 4: Simplify right side
    13,611.12x = 118,853,270.32
  5. Step 5: Solve for x
    x = 118,853,270.32/13,611.12
  6. Step 6: Final answer
    x = 8,732.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.