Home / 38,678.66-53,376.55-21,911.66

Finding the Fourth Proportional to 38,678.66, 53,376.55 and 21,911.66

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Solution

The fourth proportional to 38,678.66, 53,376.55 and 21,911.66 is: 30,238.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,678.66 : 53,376.55 = 21,911.66 : x
  2. Step 2: Convert to fraction form
    38,678.66/53,376.55 = 21,911.66/x
  3. Step 3: Cross multiply
    38,678.66x = 53,376.55 × 21,911.66
  4. Step 4: Simplify right side
    38,678.66x = 1,169,568,627.35
  5. Step 5: Solve for x
    x = 1,169,568,627.35/38,678.66
  6. Step 6: Final answer
    x = 30,238.09

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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.