Home / 28,905.29-39,896.04-18,816.23

Finding the Fourth Proportional to 28,905.29, 39,896.04 and 18,816.23

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Solution

The fourth proportional to 28,905.29, 39,896.04 and 18,816.23 is: 25,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.29 : 39,896.04 = 18,816.23 : x
  2. Step 2: Convert to fraction form
    28,905.29/39,896.04 = 18,816.23/x
  3. Step 3: Cross multiply
    28,905.29x = 39,896.04 × 18,816.23
  4. Step 4: Simplify right side
    28,905.29x = 750,693,235.03
  5. Step 5: Solve for x
    x = 750,693,235.03/28,905.29
  6. Step 6: Final answer
    x = 25,970.79

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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.