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Finding the Fourth Proportional to 20,101.15, 30,154.70 and 6,949.99

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Solution

The fourth proportional to 20,101.15, 30,154.70 and 6,949.99 is: 10,426.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.15 : 30,154.70 = 6,949.99 : x
  2. Step 2: Convert to fraction form
    20,101.15/30,154.70 = 6,949.99/x
  3. Step 3: Cross multiply
    20,101.15x = 30,154.70 × 6,949.99
  4. Step 4: Simplify right side
    20,101.15x = 209,574,863.45
  5. Step 5: Solve for x
    x = 209,574,863.45/20,101.15
  6. Step 6: Final answer
    x = 10,426.01

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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.