Home / 28,380.25-42,570.36-13,181.27

Finding the Fourth Proportional to 28,380.25, 42,570.36 and 13,181.27

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Solution

The fourth proportional to 28,380.25, 42,570.36 and 13,181.27 is: 19,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.25 : 42,570.36 = 13,181.27 : x
  2. Step 2: Convert to fraction form
    28,380.25/42,570.36 = 13,181.27/x
  3. Step 3: Cross multiply
    28,380.25x = 42,570.36 × 13,181.27
  4. Step 4: Simplify right side
    28,380.25x = 561,131,409.16
  5. Step 5: Solve for x
    x = 561,131,409.16/28,380.25
  6. Step 6: Final answer
    x = 19,771.90

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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.