Home / 28,558.19-39,404.83-18,485.23

Finding the Fourth Proportional to 28,558.19, 39,404.83 and 18,485.23

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Solution

The fourth proportional to 28,558.19, 39,404.83 and 18,485.23 is: 25,506.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.19 : 39,404.83 = 18,485.23 : x
  2. Step 2: Convert to fraction form
    28,558.19/39,404.83 = 18,485.23/x
  3. Step 3: Cross multiply
    28,558.19x = 39,404.83 × 18,485.23
  4. Step 4: Simplify right side
    28,558.19x = 728,407,345.66
  5. Step 5: Solve for x
    x = 728,407,345.66/28,558.19
  6. Step 6: Final answer
    x = 25,506.08

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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.