Home / 38,905.98-53,693.11-21,912.08

Finding the Fourth Proportional to 38,905.98, 53,693.11 and 21,912.08

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Solution

The fourth proportional to 38,905.98, 53,693.11 and 21,912.08 is: 30,240.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,905.98 : 53,693.11 = 21,912.08 : x
  2. Step 2: Convert to fraction form
    38,905.98/53,693.11 = 21,912.08/x
  3. Step 3: Cross multiply
    38,905.98x = 53,693.11 × 21,912.08
  4. Step 4: Simplify right side
    38,905.98x = 1,176,527,480.69
  5. Step 5: Solve for x
    x = 1,176,527,480.69/38,905.98
  6. Step 6: Final answer
    x = 30,240.28

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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.