Home / 13,611.32-20,378.03-9,220.98

Finding the Fourth Proportional to 13,611.32, 20,378.03 and 9,220.98

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Solution

The fourth proportional to 13,611.32, 20,378.03 and 9,220.98 is: 13,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.32 : 20,378.03 = 9,220.98 : x
  2. Step 2: Convert to fraction form
    13,611.32/20,378.03 = 9,220.98/x
  3. Step 3: Cross multiply
    13,611.32x = 20,378.03 × 9,220.98
  4. Step 4: Simplify right side
    13,611.32x = 187,905,360.96
  5. Step 5: Solve for x
    x = 187,905,360.96/13,611.32
  6. Step 6: Final answer
    x = 13,805.09

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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.