Home / 30,559.60-42,172.68-18,623.44

Finding the Fourth Proportional to 30,559.60, 42,172.68 and 18,623.44

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Solution

The fourth proportional to 30,559.60, 42,172.68 and 18,623.44 is: 25,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,559.60 : 42,172.68 = 18,623.44 : x
  2. Step 2: Convert to fraction form
    30,559.60/42,172.68 = 18,623.44/x
  3. Step 3: Cross multiply
    30,559.60x = 42,172.68 × 18,623.44
  4. Step 4: Simplify right side
    30,559.60x = 785,400,375.62
  5. Step 5: Solve for x
    x = 785,400,375.62/30,559.60
  6. Step 6: Final answer
    x = 25,700.61

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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.