Home / 20,653.97-28,502.71-11,222.54

Finding the Fourth Proportional to 20,653.97, 28,502.71 and 11,222.54

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Solution

The fourth proportional to 20,653.97, 28,502.71 and 11,222.54 is: 15,487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.97 : 28,502.71 = 11,222.54 : x
  2. Step 2: Convert to fraction form
    20,653.97/28,502.71 = 11,222.54/x
  3. Step 3: Cross multiply
    20,653.97x = 28,502.71 × 11,222.54
  4. Step 4: Simplify right side
    20,653.97x = 319,872,632.51
  5. Step 5: Solve for x
    x = 319,872,632.51/20,653.97
  6. Step 6: Final answer
    x = 15,487.22

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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.