Home / 39,645.51-54,711.55-21,739.44

Finding the Fourth Proportional to 39,645.51, 54,711.55 and 21,739.44

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Solution

The fourth proportional to 39,645.51, 54,711.55 and 21,739.44 is: 30,000.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,645.51 : 54,711.55 = 21,739.44 : x
  2. Step 2: Convert to fraction form
    39,645.51/54,711.55 = 21,739.44/x
  3. Step 3: Cross multiply
    39,645.51x = 54,711.55 × 21,739.44
  4. Step 4: Simplify right side
    39,645.51x = 1,189,398,458.53
  5. Step 5: Solve for x
    x = 1,189,398,458.53/39,645.51
  6. Step 6: Final answer
    x = 30,000.84

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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.