Home / 39,782.84-54,899.60-21,877.89

Finding the Fourth Proportional to 39,782.84, 54,899.60 and 21,877.89

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Solution

The fourth proportional to 39,782.84, 54,899.60 and 21,877.89 is: 30,191.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.84 : 54,899.60 = 21,877.89 : x
  2. Step 2: Convert to fraction form
    39,782.84/54,899.60 = 21,877.89/x
  3. Step 3: Cross multiply
    39,782.84x = 54,899.60 × 21,877.89
  4. Step 4: Simplify right side
    39,782.84x = 1,201,087,300.45
  5. Step 5: Solve for x
    x = 1,201,087,300.45/39,782.84
  6. Step 6: Final answer
    x = 30,191.09

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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.