Home / 20,533.25-28,335.89-11,101.81

Finding the Fourth Proportional to 20,533.25, 28,335.89 and 11,101.81

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Solution

The fourth proportional to 20,533.25, 28,335.89 and 11,101.81 is: 15,320.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.25 : 28,335.89 = 11,101.81 : x
  2. Step 2: Convert to fraction form
    20,533.25/28,335.89 = 11,101.81/x
  3. Step 3: Cross multiply
    20,533.25x = 28,335.89 × 11,101.81
  4. Step 4: Simplify right side
    20,533.25x = 314,579,666.96
  5. Step 5: Solve for x
    x = 314,579,666.96/20,533.25
  6. Step 6: Final answer
    x = 15,320.50

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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.