Home / 20,286.34-30,440.40-8,448.28

Finding the Fourth Proportional to 20,286.34, 30,440.40 and 8,448.28

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Solution

The fourth proportional to 20,286.34, 30,440.40 and 8,448.28 is: 12,676.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.34 : 30,440.40 = 8,448.28 : x
  2. Step 2: Convert to fraction form
    20,286.34/30,440.40 = 8,448.28/x
  3. Step 3: Cross multiply
    20,286.34x = 30,440.40 × 8,448.28
  4. Step 4: Simplify right side
    20,286.34x = 257,169,022.51
  5. Step 5: Solve for x
    x = 257,169,022.51/20,286.34
  6. Step 6: Final answer
    x = 12,676.96

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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.