Home / 20,238.01-27,928.55-11,285.89

Finding the Fourth Proportional to 20,238.01, 27,928.55 and 11,285.89

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Solution

The fourth proportional to 20,238.01, 27,928.55 and 11,285.89 is: 15,574.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.01 : 27,928.55 = 11,285.89 : x
  2. Step 2: Convert to fraction form
    20,238.01/27,928.55 = 11,285.89/x
  3. Step 3: Cross multiply
    20,238.01x = 27,928.55 × 11,285.89
  4. Step 4: Simplify right side
    20,238.01x = 315,198,543.16
  5. Step 5: Solve for x
    x = 315,198,543.16/20,238.01
  6. Step 6: Final answer
    x = 15,574.58

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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.