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Finding the Fourth Proportional to 15,091.21, 20,823.38 and 9,425.06

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Solution

The fourth proportional to 15,091.21, 20,823.38 and 9,425.06 is: 13,005.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.21 : 20,823.38 = 9,425.06 : x
  2. Step 2: Convert to fraction form
    15,091.21/20,823.38 = 9,425.06/x
  3. Step 3: Cross multiply
    15,091.21x = 20,823.38 × 9,425.06
  4. Step 4: Simplify right side
    15,091.21x = 196,261,568.09
  5. Step 5: Solve for x
    x = 196,261,568.09/15,091.21
  6. Step 6: Final answer
    x = 13,005.02

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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.