Home / 20,768.59-28,659.58-11,816.07

Finding the Fourth Proportional to 20,768.59, 28,659.58 and 11,816.07

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Solution

The fourth proportional to 20,768.59, 28,659.58 and 11,816.07 is: 16,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.59 : 28,659.58 = 11,816.07 : x
  2. Step 2: Convert to fraction form
    20,768.59/28,659.58 = 11,816.07/x
  3. Step 3: Cross multiply
    20,768.59x = 28,659.58 × 11,816.07
  4. Step 4: Simplify right side
    20,768.59x = 338,643,603.45
  5. Step 5: Solve for x
    x = 338,643,603.45/20,768.59
  6. Step 6: Final answer
    x = 16,305.57

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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.