Home / 20,682.96-28,539.99-11,730.03

Finding the Fourth Proportional to 20,682.96, 28,539.99 and 11,730.03

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Solution

The fourth proportional to 20,682.96, 28,539.99 and 11,730.03 is: 16,186.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.96 : 28,539.99 = 11,730.03 : x
  2. Step 2: Convert to fraction form
    20,682.96/28,539.99 = 11,730.03/x
  3. Step 3: Cross multiply
    20,682.96x = 28,539.99 × 11,730.03
  4. Step 4: Simplify right side
    20,682.96x = 334,774,938.90
  5. Step 5: Solve for x
    x = 334,774,938.90/20,682.96
  6. Step 6: Final answer
    x = 16,186.03

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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.