Home / 28,203.60-42,270.30-18,181.92

Finding the Fourth Proportional to 28,203.60, 42,270.30 and 18,181.92

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Solution

The fourth proportional to 28,203.60, 42,270.30 and 18,181.92 is: 27,250.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.60 : 42,270.30 = 18,181.92 : x
  2. Step 2: Convert to fraction form
    28,203.60/42,270.30 = 18,181.92/x
  3. Step 3: Cross multiply
    28,203.60x = 42,270.30 × 18,181.92
  4. Step 4: Simplify right side
    28,203.60x = 768,555,212.98
  5. Step 5: Solve for x
    x = 768,555,212.98/28,203.60
  6. Step 6: Final answer
    x = 27,250.25

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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.