Home / 28,445.37-42,674.89-10,915.20

Finding the Fourth Proportional to 28,445.37, 42,674.89 and 10,915.20

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Solution

The fourth proportional to 28,445.37, 42,674.89 and 10,915.20 is: 16,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.37 : 42,674.89 = 10,915.20 : x
  2. Step 2: Convert to fraction form
    28,445.37/42,674.89 = 10,915.20/x
  3. Step 3: Cross multiply
    28,445.37x = 42,674.89 × 10,915.20
  4. Step 4: Simplify right side
    28,445.37x = 465,804,745.95
  5. Step 5: Solve for x
    x = 465,804,745.95/28,445.37
  6. Step 6: Final answer
    x = 16,375.42

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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.