Home / 20,489.64-30,735.69-6,450.13

Finding the Fourth Proportional to 20,489.64, 30,735.69 and 6,450.13

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Solution

The fourth proportional to 20,489.64, 30,735.69 and 6,450.13 is: 9,675.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.64 : 30,735.69 = 6,450.13 : x
  2. Step 2: Convert to fraction form
    20,489.64/30,735.69 = 6,450.13/x
  3. Step 3: Cross multiply
    20,489.64x = 30,735.69 × 6,450.13
  4. Step 4: Simplify right side
    20,489.64x = 198,249,042.46
  5. Step 5: Solve for x
    x = 198,249,042.46/20,489.64
  6. Step 6: Final answer
    x = 9,675.57

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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.