Home / 21,151.46-29,188.96-11,720.03

Finding the Fourth Proportional to 21,151.46, 29,188.96 and 11,720.03

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Solution

The fourth proportional to 21,151.46, 29,188.96 and 11,720.03 is: 16,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.46 : 29,188.96 = 11,720.03 : x
  2. Step 2: Convert to fraction form
    21,151.46/29,188.96 = 11,720.03/x
  3. Step 3: Cross multiply
    21,151.46x = 29,188.96 × 11,720.03
  4. Step 4: Simplify right side
    21,151.46x = 342,095,311.62
  5. Step 5: Solve for x
    x = 342,095,311.62/21,151.46
  6. Step 6: Final answer
    x = 16,173.60

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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.