Home / 20,992.08-31,507.56-10,611.12

Finding the Fourth Proportional to 20,992.08, 31,507.56 and 10,611.12

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Solution

The fourth proportional to 20,992.08, 31,507.56 and 10,611.12 is: 15,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.08 : 31,507.56 = 10,611.12 : x
  2. Step 2: Convert to fraction form
    20,992.08/31,507.56 = 10,611.12/x
  3. Step 3: Cross multiply
    20,992.08x = 31,507.56 × 10,611.12
  4. Step 4: Simplify right side
    20,992.08x = 334,330,500.07
  5. Step 5: Solve for x
    x = 334,330,500.07/20,992.08
  6. Step 6: Final answer
    x = 15,926.51

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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.