Home / 20,708.76-28,578.24-11,277.48

Finding the Fourth Proportional to 20,708.76, 28,578.24 and 11,277.48

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Solution

The fourth proportional to 20,708.76, 28,578.24 and 11,277.48 is: 15,563.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.76 : 28,578.24 = 11,277.48 : x
  2. Step 2: Convert to fraction form
    20,708.76/28,578.24 = 11,277.48/x
  3. Step 3: Cross multiply
    20,708.76x = 28,578.24 × 11,277.48
  4. Step 4: Simplify right side
    20,708.76x = 322,290,530.04
  5. Step 5: Solve for x
    x = 322,290,530.04/20,708.76
  6. Step 6: Final answer
    x = 15,563.00

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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.