Home / 39,592.85-54,638.15-21,687.89

Finding the Fourth Proportional to 39,592.85, 54,638.15 and 21,687.89

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Solution

The fourth proportional to 39,592.85, 54,638.15 and 21,687.89 is: 29,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,592.85 : 54,638.15 = 21,687.89 : x
  2. Step 2: Convert to fraction form
    39,592.85/54,638.15 = 21,687.89/x
  3. Step 3: Cross multiply
    39,592.85x = 54,638.15 × 21,687.89
  4. Step 4: Simplify right side
    39,592.85x = 1,184,985,805.37
  5. Step 5: Solve for x
    x = 1,184,985,805.37/39,592.85
  6. Step 6: Final answer
    x = 29,929.29

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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.