Home / 38,960.07-53,771.90-21,969.51

Finding the Fourth Proportional to 38,960.07, 53,771.90 and 21,969.51

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Solution

The fourth proportional to 38,960.07, 53,771.90 and 21,969.51 is: 30,321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,960.07 : 53,771.90 = 21,969.51 : x
  2. Step 2: Convert to fraction form
    38,960.07/53,771.90 = 21,969.51/x
  3. Step 3: Cross multiply
    38,960.07x = 53,771.90 × 21,969.51
  4. Step 4: Simplify right side
    38,960.07x = 1,181,342,184.92
  5. Step 5: Solve for x
    x = 1,181,342,184.92/38,960.07
  6. Step 6: Final answer
    x = 30,321.87

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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.