Home / 28,959.66-39,938.67-19,540.98

Finding the Fourth Proportional to 28,959.66, 39,938.67 and 19,540.98

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Solution

The fourth proportional to 28,959.66, 39,938.67 and 19,540.98 is: 26,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,959.66 : 39,938.67 = 19,540.98 : x
  2. Step 2: Convert to fraction form
    28,959.66/39,938.67 = 19,540.98/x
  3. Step 3: Cross multiply
    28,959.66x = 39,938.67 × 19,540.98
  4. Step 4: Simplify right side
    28,959.66x = 780,440,751.70
  5. Step 5: Solve for x
    x = 780,440,751.70/28,959.66
  6. Step 6: Final answer
    x = 26,949.24

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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.