Home / 20,155.83-27,813.85-11,203.02

Finding the Fourth Proportional to 20,155.83, 27,813.85 and 11,203.02

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Solution

The fourth proportional to 20,155.83, 27,813.85 and 11,203.02 is: 15,459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.83 : 27,813.85 = 11,203.02 : x
  2. Step 2: Convert to fraction form
    20,155.83/27,813.85 = 11,203.02/x
  3. Step 3: Cross multiply
    20,155.83x = 27,813.85 × 11,203.02
  4. Step 4: Simplify right side
    20,155.83x = 311,599,061.81
  5. Step 5: Solve for x
    x = 311,599,061.81/20,155.83
  6. Step 6: Final answer
    x = 15,459.50

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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.