Home / 20,290.77-30,439.04-6,251.94

Finding the Fourth Proportional to 20,290.77, 30,439.04 and 6,251.94

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Solution

The fourth proportional to 20,290.77, 30,439.04 and 6,251.94 is: 9,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.77 : 30,439.04 = 6,251.94 : x
  2. Step 2: Convert to fraction form
    20,290.77/30,439.04 = 6,251.94/x
  3. Step 3: Cross multiply
    20,290.77x = 30,439.04 × 6,251.94
  4. Step 4: Simplify right side
    20,290.77x = 190,303,020.48
  5. Step 5: Solve for x
    x = 190,303,020.48/20,290.77
  6. Step 6: Final answer
    x = 9,378.80

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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.