Home / 39,682.98-54,762.48-21,778.47

Finding the Fourth Proportional to 39,682.98, 54,762.48 and 21,778.47

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Solution

The fourth proportional to 39,682.98, 54,762.48 and 21,778.47 is: 30,054.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,682.98 : 54,762.48 = 21,778.47 : x
  2. Step 2: Convert to fraction form
    39,682.98/54,762.48 = 21,778.47/x
  3. Step 3: Cross multiply
    39,682.98x = 54,762.48 × 21,778.47
  4. Step 4: Simplify right side
    39,682.98x = 1,192,643,027.81
  5. Step 5: Solve for x
    x = 1,192,643,027.81/39,682.98
  6. Step 6: Final answer
    x = 30,054.27

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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.