Home / 20,148.40-30,198.30-10,282.60

Finding the Fourth Proportional to 20,148.40, 30,198.30 and 10,282.60

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Solution

The fourth proportional to 20,148.40, 30,198.30 and 10,282.60 is: 15,411.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.40 : 30,198.30 = 10,282.60 : x
  2. Step 2: Convert to fraction form
    20,148.40/30,198.30 = 10,282.60/x
  3. Step 3: Cross multiply
    20,148.40x = 30,198.30 × 10,282.60
  4. Step 4: Simplify right side
    20,148.40x = 310,517,039.58
  5. Step 5: Solve for x
    x = 310,517,039.58/20,148.40
  6. Step 6: Final answer
    x = 15,411.50

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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.