Home / 39,719.97-54,813.34-21,570.54

Finding the Fourth Proportional to 39,719.97, 54,813.34 and 21,570.54

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Solution

The fourth proportional to 39,719.97, 54,813.34 and 21,570.54 is: 29,767.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.97 : 54,813.34 = 21,570.54 : x
  2. Step 2: Convert to fraction form
    39,719.97/54,813.34 = 21,570.54/x
  3. Step 3: Cross multiply
    39,719.97x = 54,813.34 × 21,570.54
  4. Step 4: Simplify right side
    39,719.97x = 1,182,353,343.00
  5. Step 5: Solve for x
    x = 1,182,353,343.00/39,719.97
  6. Step 6: Final answer
    x = 29,767.23

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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.