Home / 20,661.64-28,513.12-11,230.24

Finding the Fourth Proportional to 20,661.64, 28,513.12 and 11,230.24

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Solution

The fourth proportional to 20,661.64, 28,513.12 and 11,230.24 is: 15,497.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.64 : 28,513.12 = 11,230.24 : x
  2. Step 2: Convert to fraction form
    20,661.64/28,513.12 = 11,230.24/x
  3. Step 3: Cross multiply
    20,661.64x = 28,513.12 × 11,230.24
  4. Step 4: Simplify right side
    20,661.64x = 320,209,180.75
  5. Step 5: Solve for x
    x = 320,209,180.75/20,661.64
  6. Step 6: Final answer
    x = 15,497.76

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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.