Home / 15,449.26-21,321.18-8,735.64

Finding the Fourth Proportional to 15,449.26, 21,321.18 and 8,735.64

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Solution

The fourth proportional to 15,449.26, 21,321.18 and 8,735.64 is: 12,055.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.26 : 21,321.18 = 8,735.64 : x
  2. Step 2: Convert to fraction form
    15,449.26/21,321.18 = 8,735.64/x
  3. Step 3: Cross multiply
    15,449.26x = 21,321.18 × 8,735.64
  4. Step 4: Simplify right side
    15,449.26x = 186,254,109.18
  5. Step 5: Solve for x
    x = 186,254,109.18/15,449.26
  6. Step 6: Final answer
    x = 12,055.86

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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.