Home / 20,533.14-28,335.78-11,101.74

Finding the Fourth Proportional to 20,533.14, 28,335.78 and 11,101.74

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Solution

The fourth proportional to 20,533.14, 28,335.78 and 11,101.74 is: 15,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.14 : 28,335.78 = 11,101.74 : x
  2. Step 2: Convert to fraction form
    20,533.14/28,335.78 = 11,101.74/x
  3. Step 3: Cross multiply
    20,533.14x = 28,335.78 × 11,101.74
  4. Step 4: Simplify right side
    20,533.14x = 314,576,462.26
  5. Step 5: Solve for x
    x = 314,576,462.26/20,533.14
  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.