Home / 28,558.83-39,405.72-18,485.87

Finding the Fourth Proportional to 28,558.83, 39,405.72 and 18,485.87

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Solution

The fourth proportional to 28,558.83, 39,405.72 and 18,485.87 is: 25,506.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.83 : 39,405.72 = 18,485.87 : x
  2. Step 2: Convert to fraction form
    28,558.83/39,405.72 = 18,485.87/x
  3. Step 3: Cross multiply
    28,558.83x = 39,405.72 × 18,485.87
  4. Step 4: Simplify right side
    28,558.83x = 728,448,955.15
  5. Step 5: Solve for x
    x = 728,448,955.15/28,558.83
  6. Step 6: Final answer
    x = 25,506.96

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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.