Home / 21,735.21-29,987.55-12,173.64

Finding the Fourth Proportional to 21,735.21, 29,987.55 and 12,173.64

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Solution

The fourth proportional to 21,735.21, 29,987.55 and 12,173.64 is: 16,795.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,735.21 : 29,987.55 = 12,173.64 : x
  2. Step 2: Convert to fraction form
    21,735.21/29,987.55 = 12,173.64/x
  3. Step 3: Cross multiply
    21,735.21x = 29,987.55 × 12,173.64
  4. Step 4: Simplify right side
    21,735.21x = 365,057,638.18
  5. Step 5: Solve for x
    x = 365,057,638.18/21,735.21
  6. Step 6: Final answer
    x = 16,795.68

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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.