Home / 20,048.80-30,072.85-6,900.88

Finding the Fourth Proportional to 20,048.80, 30,072.85 and 6,900.88

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Solution

The fourth proportional to 20,048.80, 30,072.85 and 6,900.88 is: 10,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,048.80 : 30,072.85 = 6,900.88 : x
  2. Step 2: Convert to fraction form
    20,048.80/30,072.85 = 6,900.88/x
  3. Step 3: Cross multiply
    20,048.80x = 30,072.85 × 6,900.88
  4. Step 4: Simplify right side
    20,048.80x = 207,529,129.11
  5. Step 5: Solve for x
    x = 207,529,129.11/20,048.80
  6. Step 6: Final answer
    x = 10,351.20

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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.