Home / 20,161.90-30,210.45-16,857.10

Finding the Fourth Proportional to 20,161.90, 30,210.45 and 16,857.10

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Solution

The fourth proportional to 20,161.90, 30,210.45 and 16,857.10 is: 25,258.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.90 : 30,210.45 = 16,857.10 : x
  2. Step 2: Convert to fraction form
    20,161.90/30,210.45 = 16,857.10/x
  3. Step 3: Cross multiply
    20,161.90x = 30,210.45 × 16,857.10
  4. Step 4: Simplify right side
    20,161.90x = 509,260,576.70
  5. Step 5: Solve for x
    x = 509,260,576.70/20,161.90
  6. Step 6: Final answer
    x = 25,258.56

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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.