Home / 28,554.75-39,422.84-18,636.03

Finding the Fourth Proportional to 28,554.75, 39,422.84 and 18,636.03

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Solution

The fourth proportional to 28,554.75, 39,422.84 and 18,636.03 is: 25,729.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.75 : 39,422.84 = 18,636.03 : x
  2. Step 2: Convert to fraction form
    28,554.75/39,422.84 = 18,636.03/x
  3. Step 3: Cross multiply
    28,554.75x = 39,422.84 × 18,636.03
  4. Step 4: Simplify right side
    28,554.75x = 734,685,135.75
  5. Step 5: Solve for x
    x = 734,685,135.75/28,554.75
  6. Step 6: Final answer
    x = 25,729.00

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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.