Home / 20,655.23-30,984.86-6,611.72

Finding the Fourth Proportional to 20,655.23, 30,984.86 and 6,611.72

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Solution

The fourth proportional to 20,655.23, 30,984.86 and 6,611.72 is: 9,918.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.23 : 30,984.86 = 6,611.72 : x
  2. Step 2: Convert to fraction form
    20,655.23/30,984.86 = 6,611.72/x
  3. Step 3: Cross multiply
    20,655.23x = 30,984.86 × 6,611.72
  4. Step 4: Simplify right side
    20,655.23x = 204,863,080.16
  5. Step 5: Solve for x
    x = 204,863,080.16/20,655.23
  6. Step 6: Final answer
    x = 9,918.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.