Home / 20,661.97-28,513.74-11,230.53

Finding the Fourth Proportional to 20,661.97, 28,513.74 and 11,230.53

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Solution

The fourth proportional to 20,661.97, 28,513.74 and 11,230.53 is: 15,498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.97 : 28,513.74 = 11,230.53 : x
  2. Step 2: Convert to fraction form
    20,661.97/28,513.74 = 11,230.53/x
  3. Step 3: Cross multiply
    20,661.97x = 28,513.74 × 11,230.53
  4. Step 4: Simplify right side
    20,661.97x = 320,224,412.48
  5. Step 5: Solve for x
    x = 320,224,412.48/20,661.97
  6. Step 6: Final answer
    x = 15,498.25

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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.