Home / 20,137.13-30,211.05-6,989.48

Finding the Fourth Proportional to 20,137.13, 30,211.05 and 6,989.48

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Solution

The fourth proportional to 20,137.13, 30,211.05 and 6,989.48 is: 10,486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.13 : 30,211.05 = 6,989.48 : x
  2. Step 2: Convert to fraction form
    20,137.13/30,211.05 = 6,989.48/x
  3. Step 3: Cross multiply
    20,137.13x = 30,211.05 × 6,989.48
  4. Step 4: Simplify right side
    20,137.13x = 211,159,378.70
  5. Step 5: Solve for x
    x = 211,159,378.70/20,137.13
  6. Step 6: Final answer
    x = 10,486.07

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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.