Home / 28,438.29-42,569.94-18,556.29

Finding the Fourth Proportional to 28,438.29, 42,569.94 and 18,556.29

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Solution

The fourth proportional to 28,438.29, 42,569.94 and 18,556.29 is: 27,777.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.29 : 42,569.94 = 18,556.29 : x
  2. Step 2: Convert to fraction form
    28,438.29/42,569.94 = 18,556.29/x
  3. Step 3: Cross multiply
    28,438.29x = 42,569.94 × 18,556.29
  4. Step 4: Simplify right side
    28,438.29x = 789,940,151.92
  5. Step 5: Solve for x
    x = 789,940,151.92/28,438.29
  6. Step 6: Final answer
    x = 27,777.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.