Home / 28,725.95-39,622.34-18,636.37

Finding the Fourth Proportional to 28,725.95, 39,622.34 and 18,636.37

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Solution

The fourth proportional to 28,725.95, 39,622.34 and 18,636.37 is: 25,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.95 : 39,622.34 = 18,636.37 : x
  2. Step 2: Convert to fraction form
    28,725.95/39,622.34 = 18,636.37/x
  3. Step 3: Cross multiply
    28,725.95x = 39,622.34 × 18,636.37
  4. Step 4: Simplify right side
    28,725.95x = 738,416,536.04
  5. Step 5: Solve for x
    x = 738,416,536.04/28,725.95
  6. Step 6: Final answer
    x = 25,705.55

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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.