Home / 20,533.22-28,335.79-11,101.78

Finding the Fourth Proportional to 20,533.22, 28,335.79 and 11,101.78

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Solution

The fourth proportional to 20,533.22, 28,335.79 and 11,101.78 is: 15,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.22 : 28,335.79 = 11,101.78 : x
  2. Step 2: Convert to fraction form
    20,533.22/28,335.79 = 11,101.78/x
  3. Step 3: Cross multiply
    20,533.22x = 28,335.79 × 11,101.78
  4. Step 4: Simplify right side
    20,533.22x = 314,577,756.00
  5. Step 5: Solve for x
    x = 314,577,756.00/20,533.22
  6. Step 6: Final answer
    x = 15,320.43

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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.