Home / 20,155.36-27,810.12-11,768.08

Finding the Fourth Proportional to 20,155.36, 27,810.12 and 11,768.08

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Solution

The fourth proportional to 20,155.36, 27,810.12 and 11,768.08 is: 16,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.36 : 27,810.12 = 11,768.08 : x
  2. Step 2: Convert to fraction form
    20,155.36/27,810.12 = 11,768.08/x
  3. Step 3: Cross multiply
    20,155.36x = 27,810.12 × 11,768.08
  4. Step 4: Simplify right side
    20,155.36x = 327,271,716.97
  5. Step 5: Solve for x
    x = 327,271,716.97/20,155.36
  6. Step 6: Final answer
    x = 16,237.45

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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.