Home / 11,431.19-15,780.43-8,599.64

Finding the Fourth Proportional to 11,431.19, 15,780.43 and 8,599.64

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Solution

The fourth proportional to 11,431.19, 15,780.43 and 8,599.64 is: 11,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.19 : 15,780.43 = 8,599.64 : x
  2. Step 2: Convert to fraction form
    11,431.19/15,780.43 = 8,599.64/x
  3. Step 3: Cross multiply
    11,431.19x = 15,780.43 × 8,599.64
  4. Step 4: Simplify right side
    11,431.19x = 135,706,017.05
  5. Step 5: Solve for x
    x = 135,706,017.05/11,431.19
  6. Step 6: Final answer
    x = 11,871.56

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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.