Home / 15,181.90-20,961.37-9,817.32

Finding the Fourth Proportional to 15,181.90, 20,961.37 and 9,817.32

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Solution

The fourth proportional to 15,181.90, 20,961.37 and 9,817.32 is: 13,554.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,181.90 : 20,961.37 = 9,817.32 : x
  2. Step 2: Convert to fraction form
    15,181.90/20,961.37 = 9,817.32/x
  3. Step 3: Cross multiply
    15,181.90x = 20,961.37 × 9,817.32
  4. Step 4: Simplify right side
    15,181.90x = 205,784,546.63
  5. Step 5: Solve for x
    x = 205,784,546.63/15,181.90
  6. Step 6: Final answer
    x = 13,554.60

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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.