Home / 28,906.80-39,888.36-18,150

Finding the Fourth Proportional to 28,906.80, 39,888.36 and 18,150

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Solution

The fourth proportional to 28,906.80, 39,888.36 and 18,150 is: 25,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,906.80 : 39,888.36 = 18,150 : x
  2. Step 2: Convert to fraction form
    28,906.80/39,888.36 = 18,150/x
  3. Step 3: Cross multiply
    28,906.80x = 39,888.36 × 18,150
  4. Step 4: Simplify right side
    28,906.80x = 723,973,734
  5. Step 5: Solve for x
    x = 723,973,734/28,906.80
  6. Step 6: Final answer
    x = 25,045.10

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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.