Home / 20,968.88-31,461.96-15,450.08

Finding the Fourth Proportional to 20,968.88, 31,461.96 and 15,450.08

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Solution

The fourth proportional to 20,968.88, 31,461.96 and 15,450.08 is: 23,181.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.88 : 31,461.96 = 15,450.08 : x
  2. Step 2: Convert to fraction form
    20,968.88/31,461.96 = 15,450.08/x
  3. Step 3: Cross multiply
    20,968.88x = 31,461.96 × 15,450.08
  4. Step 4: Simplify right side
    20,968.88x = 486,089,798.96
  5. Step 5: Solve for x
    x = 486,089,798.96/20,968.88
  6. Step 6: Final answer
    x = 23,181.49

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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.