Home / 13,611.30-20,411.67-5,290.22

Finding the Fourth Proportional to 13,611.30, 20,411.67 and 5,290.22

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Solution

The fourth proportional to 13,611.30, 20,411.67 and 5,290.22 is: 7,933.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.30 : 20,411.67 = 5,290.22 : x
  2. Step 2: Convert to fraction form
    13,611.30/20,411.67 = 5,290.22/x
  3. Step 3: Cross multiply
    13,611.30x = 20,411.67 × 5,290.22
  4. Step 4: Simplify right side
    13,611.30x = 107,982,224.87
  5. Step 5: Solve for x
    x = 107,982,224.87/13,611.30
  6. Step 6: Final answer
    x = 7,933.28

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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.