Home / 28,389.24-42,556.32-15,915.24

Finding the Fourth Proportional to 28,389.24, 42,556.32 and 15,915.24

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Solution

The fourth proportional to 28,389.24, 42,556.32 and 15,915.24 is: 23,857.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.24 : 42,556.32 = 15,915.24 : x
  2. Step 2: Convert to fraction form
    28,389.24/42,556.32 = 15,915.24/x
  3. Step 3: Cross multiply
    28,389.24x = 42,556.32 × 15,915.24
  4. Step 4: Simplify right side
    28,389.24x = 677,294,046.32
  5. Step 5: Solve for x
    x = 677,294,046.32/28,389.24
  6. Step 6: Final answer
    x = 23,857.42

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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.