Home / 28,453.44-39,269.70-15,879

Finding the Fourth Proportional to 28,453.44, 39,269.70 and 15,879

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Solution

The fourth proportional to 28,453.44, 39,269.70 and 15,879 is: 21,915.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.44 : 39,269.70 = 15,879 : x
  2. Step 2: Convert to fraction form
    28,453.44/39,269.70 = 15,879/x
  3. Step 3: Cross multiply
    28,453.44x = 39,269.70 × 15,879
  4. Step 4: Simplify right side
    28,453.44x = 623,563,566.30
  5. Step 5: Solve for x
    x = 623,563,566.30/28,453.44
  6. Step 6: Final answer
    x = 21,915.23

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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.