Home / 39,779.32-54,894.57-21,629.65

Finding the Fourth Proportional to 39,779.32, 54,894.57 and 21,629.65

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Solution

The fourth proportional to 39,779.32, 54,894.57 and 21,629.65 is: 29,848.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.32 : 54,894.57 = 21,629.65 : x
  2. Step 2: Convert to fraction form
    39,779.32/54,894.57 = 21,629.65/x
  3. Step 3: Cross multiply
    39,779.32x = 54,894.57 × 21,629.65
  4. Step 4: Simplify right side
    39,779.32x = 1,187,350,336.00
  5. Step 5: Solve for x
    x = 1,187,350,336.00/39,779.32
  6. Step 6: Final answer
    x = 29,848.43

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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.