Home / 14,122.09-21,157.32-6,611.87

Finding the Fourth Proportional to 14,122.09, 21,157.32 and 6,611.87

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Solution

The fourth proportional to 14,122.09, 21,157.32 and 6,611.87 is: 9,905.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.09 : 21,157.32 = 6,611.87 : x
  2. Step 2: Convert to fraction form
    14,122.09/21,157.32 = 6,611.87/x
  3. Step 3: Cross multiply
    14,122.09x = 21,157.32 × 6,611.87
  4. Step 4: Simplify right side
    14,122.09x = 139,889,489.88
  5. Step 5: Solve for x
    x = 139,889,489.88/14,122.09
  6. Step 6: Final answer
    x = 9,905.72

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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.