Home / 10,863.78-14,987.55-6,611.43

Finding the Fourth Proportional to 10,863.78, 14,987.55 and 6,611.43

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Solution

The fourth proportional to 10,863.78, 14,987.55 and 6,611.43 is: 9,121.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.78 : 14,987.55 = 6,611.43 : x
  2. Step 2: Convert to fraction form
    10,863.78/14,987.55 = 6,611.43/x
  3. Step 3: Cross multiply
    10,863.78x = 14,987.55 × 6,611.43
  4. Step 4: Simplify right side
    10,863.78x = 99,089,137.70
  5. Step 5: Solve for x
    x = 99,089,137.70/10,863.78
  6. Step 6: Final answer
    x = 9,121.06

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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.