Home / 39,245.00-54,154.58-21,782.79

Finding the Fourth Proportional to 39,245.00, 54,154.58 and 21,782.79

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Solution

The fourth proportional to 39,245.00, 54,154.58 and 21,782.79 is: 30,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,245.00 : 54,154.58 = 21,782.79 : x
  2. Step 2: Convert to fraction form
    39,245.00/54,154.58 = 21,782.79/x
  3. Step 3: Cross multiply
    39,245.00x = 54,154.58 × 21,782.79
  4. Step 4: Simplify right side
    39,245.00x = 1,179,637,734.76
  5. Step 5: Solve for x
    x = 1,179,637,734.76/39,245.00
  6. Step 6: Final answer
    x = 30,058.30

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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.