Home / 28,065.26-38,729.08-16,728.91

Finding the Fourth Proportional to 28,065.26, 38,729.08 and 16,728.91

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Solution

The fourth proportional to 28,065.26, 38,729.08 and 16,728.91 is: 23,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.26 : 38,729.08 = 16,728.91 : x
  2. Step 2: Convert to fraction form
    28,065.26/38,729.08 = 16,728.91/x
  3. Step 3: Cross multiply
    28,065.26x = 38,729.08 × 16,728.91
  4. Step 4: Simplify right side
    28,065.26x = 647,895,293.70
  5. Step 5: Solve for x
    x = 647,895,293.70/28,065.26
  6. Step 6: Final answer
    x = 23,085.31

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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.