Home / 20,447.16-28,216.94-11,615.16

Finding the Fourth Proportional to 20,447.16, 28,216.94 and 11,615.16

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Solution

The fourth proportional to 20,447.16, 28,216.94 and 11,615.16 is: 16,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.16 : 28,216.94 = 11,615.16 : x
  2. Step 2: Convert to fraction form
    20,447.16/28,216.94 = 11,615.16/x
  3. Step 3: Cross multiply
    20,447.16x = 28,216.94 × 11,615.16
  4. Step 4: Simplify right side
    20,447.16x = 327,744,272.81
  5. Step 5: Solve for x
    x = 327,744,272.81/20,447.16
  6. Step 6: Final answer
    x = 16,028.84

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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.