Home / 39,682.98-54,763.19-21,779.65

Finding the Fourth Proportional to 39,682.98, 54,763.19 and 21,779.65

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Solution

The fourth proportional to 39,682.98, 54,763.19 and 21,779.65 is: 30,056.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,682.98 : 54,763.19 = 21,779.65 : x
  2. Step 2: Convert to fraction form
    39,682.98/54,763.19 = 21,779.65/x
  3. Step 3: Cross multiply
    39,682.98x = 54,763.19 × 21,779.65
  4. Step 4: Simplify right side
    39,682.98x = 1,192,723,152.31
  5. Step 5: Solve for x
    x = 1,192,723,152.31/39,682.98
  6. Step 6: Final answer
    x = 30,056.29

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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.