Home / 28,355.08-39,089.46-19,945.48

Finding the Fourth Proportional to 28,355.08, 39,089.46 and 19,945.48

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Solution

The fourth proportional to 28,355.08, 39,089.46 and 19,945.48 is: 27,496.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.08 : 39,089.46 = 19,945.48 : x
  2. Step 2: Convert to fraction form
    28,355.08/39,089.46 = 19,945.48/x
  3. Step 3: Cross multiply
    28,355.08x = 39,089.46 × 19,945.48
  4. Step 4: Simplify right side
    28,355.08x = 779,658,042.64
  5. Step 5: Solve for x
    x = 779,658,042.64/28,355.08
  6. Step 6: Final answer
    x = 27,496.24

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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.