Home / 20,661.37-28,513.29-11,708.58

Finding the Fourth Proportional to 20,661.37, 28,513.29 and 11,708.58

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Solution

The fourth proportional to 20,661.37, 28,513.29 and 11,708.58 is: 16,158.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.37 : 28,513.29 = 11,708.58 : x
  2. Step 2: Convert to fraction form
    20,661.37/28,513.29 = 11,708.58/x
  3. Step 3: Cross multiply
    20,661.37x = 28,513.29 × 11,708.58
  4. Step 4: Simplify right side
    20,661.37x = 333,850,074.01
  5. Step 5: Solve for x
    x = 333,850,074.01/20,661.37
  6. Step 6: Final answer
    x = 16,158.18

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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.