Home / 39,682.84-54,762.16-21,778.14

Finding the Fourth Proportional to 39,682.84, 54,762.16 and 21,778.14

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Solution

The fourth proportional to 39,682.84, 54,762.16 and 21,778.14 is: 30,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,682.84 : 54,762.16 = 21,778.14 : x
  2. Step 2: Convert to fraction form
    39,682.84/54,762.16 = 21,778.14/x
  3. Step 3: Cross multiply
    39,682.84x = 54,762.16 × 21,778.14
  4. Step 4: Simplify right side
    39,682.84x = 1,192,617,987.18
  5. Step 5: Solve for x
    x = 1,192,617,987.18/39,682.84
  6. Step 6: Final answer
    x = 30,053.75

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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.