Home / 20,653.54-28,502.14-11,222.26

Finding the Fourth Proportional to 20,653.54, 28,502.14 and 11,222.26

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Solution

The fourth proportional to 20,653.54, 28,502.14 and 11,222.26 is: 15,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.54 : 28,502.14 = 11,222.26 : x
  2. Step 2: Convert to fraction form
    20,653.54/28,502.14 = 11,222.26/x
  3. Step 3: Cross multiply
    20,653.54x = 28,502.14 × 11,222.26
  4. Step 4: Simplify right side
    20,653.54x = 319,858,255.07
  5. Step 5: Solve for x
    x = 319,858,255.07/20,653.54
  6. Step 6: Final answer
    x = 15,486.85

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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.