Home / 15,336.22-21,157.86-9,669.46

Finding the Fourth Proportional to 15,336.22, 21,157.86 and 9,669.46

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Solution

The fourth proportional to 15,336.22, 21,157.86 and 9,669.46 is: 13,339.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,336.22 : 21,157.86 = 9,669.46 : x
  2. Step 2: Convert to fraction form
    15,336.22/21,157.86 = 9,669.46/x
  3. Step 3: Cross multiply
    15,336.22x = 21,157.86 × 9,669.46
  4. Step 4: Simplify right side
    15,336.22x = 204,585,080.96
  5. Step 5: Solve for x
    x = 204,585,080.96/15,336.22
  6. Step 6: Final answer
    x = 13,339.99

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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.