Home / 20,155.58-27,813.50-11,202.77

Finding the Fourth Proportional to 20,155.58, 27,813.50 and 11,202.77

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Solution

The fourth proportional to 20,155.58, 27,813.50 and 11,202.77 is: 15,459.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.58 : 27,813.50 = 11,202.77 : x
  2. Step 2: Convert to fraction form
    20,155.58/27,813.50 = 11,202.77/x
  3. Step 3: Cross multiply
    20,155.58x = 27,813.50 × 11,202.77
  4. Step 4: Simplify right side
    20,155.58x = 311,588,243.40
  5. Step 5: Solve for x
    x = 311,588,243.40/20,155.58
  6. Step 6: Final answer
    x = 15,459.16

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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.