Home / 28,121.99-38,840.24-19,153.94

Finding the Fourth Proportional to 28,121.99, 38,840.24 and 19,153.94

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Solution

The fourth proportional to 28,121.99, 38,840.24 and 19,153.94 is: 26,454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.99 : 38,840.24 = 19,153.94 : x
  2. Step 2: Convert to fraction form
    28,121.99/38,840.24 = 19,153.94/x
  3. Step 3: Cross multiply
    28,121.99x = 38,840.24 × 19,153.94
  4. Step 4: Simplify right side
    28,121.99x = 743,943,480.23
  5. Step 5: Solve for x
    x = 743,943,480.23/28,121.99
  6. Step 6: Final answer
    x = 26,454.16

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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.