Home / 21,153.44-31,740.48-8,682.68

Finding the Fourth Proportional to 21,153.44, 31,740.48 and 8,682.68

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Solution

The fourth proportional to 21,153.44, 31,740.48 and 8,682.68 is: 13,028.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.44 : 31,740.48 = 8,682.68 : x
  2. Step 2: Convert to fraction form
    21,153.44/31,740.48 = 8,682.68/x
  3. Step 3: Cross multiply
    21,153.44x = 31,740.48 × 8,682.68
  4. Step 4: Simplify right side
    21,153.44x = 275,592,430.89
  5. Step 5: Solve for x
    x = 275,592,430.89/21,153.44
  6. Step 6: Final answer
    x = 13,028.26

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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.