Home / 39,739.84-54,842.16-21,835.96

Finding the Fourth Proportional to 39,739.84, 54,842.16 and 21,835.96

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Solution

The fourth proportional to 39,739.84, 54,842.16 and 21,835.96 is: 30,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,739.84 : 54,842.16 = 21,835.96 : x
  2. Step 2: Convert to fraction form
    39,739.84/54,842.16 = 21,835.96/x
  3. Step 3: Cross multiply
    39,739.84x = 54,842.16 × 21,835.96
  4. Step 4: Simplify right side
    39,739.84x = 1,197,531,212.07
  5. Step 5: Solve for x
    x = 1,197,531,212.07/39,739.84
  6. Step 6: Final answer
    x = 30,134.27

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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.