Home / 39,309.84-54,245.73-21,404.79

Finding the Fourth Proportional to 39,309.84, 54,245.73 and 21,404.79

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Solution

The fourth proportional to 39,309.84, 54,245.73 and 21,404.79 is: 29,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.84 : 54,245.73 = 21,404.79 : x
  2. Step 2: Convert to fraction form
    39,309.84/54,245.73 = 21,404.79/x
  3. Step 3: Cross multiply
    39,309.84x = 54,245.73 × 21,404.79
  4. Step 4: Simplify right side
    39,309.84x = 1,161,118,459.05
  5. Step 5: Solve for x
    x = 1,161,118,459.05/39,309.84
  6. Step 6: Final answer
    x = 29,537.60

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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.