Home / 39,758.57-54,865.43-21,853.46

Finding the Fourth Proportional to 39,758.57, 54,865.43 and 21,853.46

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Solution

The fourth proportional to 39,758.57, 54,865.43 and 21,853.46 is: 30,157.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,758.57 : 54,865.43 = 21,853.46 : x
  2. Step 2: Convert to fraction form
    39,758.57/54,865.43 = 21,853.46/x
  3. Step 3: Cross multiply
    39,758.57x = 54,865.43 × 21,853.46
  4. Step 4: Simplify right side
    39,758.57x = 1,198,999,096.29
  5. Step 5: Solve for x
    x = 1,198,999,096.29/39,758.57
  6. Step 6: Final answer
    x = 30,157.00

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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.