Home / 20,100.90-30,154.32-6,949.74

Finding the Fourth Proportional to 20,100.90, 30,154.32 and 6,949.74

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Solution

The fourth proportional to 20,100.90, 30,154.32 and 6,949.74 is: 10,425.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.90 : 30,154.32 = 6,949.74 : x
  2. Step 2: Convert to fraction form
    20,100.90/30,154.32 = 6,949.74/x
  3. Step 3: Cross multiply
    20,100.90x = 30,154.32 × 6,949.74
  4. Step 4: Simplify right side
    20,100.90x = 209,564,683.88
  5. Step 5: Solve for x
    x = 209,564,683.88/20,100.90
  6. Step 6: Final answer
    x = 10,425.64

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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.