Home / 39,698.12-54,784.10-21,794.80

Finding the Fourth Proportional to 39,698.12, 54,784.10 and 21,794.80

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Solution

The fourth proportional to 39,698.12, 54,784.10 and 21,794.80 is: 30,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698.12 : 54,784.10 = 21,794.80 : x
  2. Step 2: Convert to fraction form
    39,698.12/54,784.10 = 21,794.80/x
  3. Step 3: Cross multiply
    39,698.12x = 54,784.10 × 21,794.80
  4. Step 4: Simplify right side
    39,698.12x = 1,194,008,502.68
  5. Step 5: Solve for x
    x = 1,194,008,502.68/39,698.12
  6. Step 6: Final answer
    x = 30,077.21

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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.