Home / 21,002.60-28,982.26-11,571.16

Finding the Fourth Proportional to 21,002.60, 28,982.26 and 11,571.16

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Solution

The fourth proportional to 21,002.60, 28,982.26 and 11,571.16 is: 15,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.60 : 28,982.26 = 11,571.16 : x
  2. Step 2: Convert to fraction form
    21,002.60/28,982.26 = 11,571.16/x
  3. Step 3: Cross multiply
    21,002.60x = 28,982.26 × 11,571.16
  4. Step 4: Simplify right side
    21,002.60x = 335,358,367.62
  5. Step 5: Solve for x
    x = 335,358,367.62/21,002.60
  6. Step 6: Final answer
    x = 15,967.47

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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.