Home / 20,443.80-30,647.70-12,103.32

Finding the Fourth Proportional to 20,443.80, 30,647.70 and 12,103.32

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Solution

The fourth proportional to 20,443.80, 30,647.70 and 12,103.32 is: 18,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.80 : 30,647.70 = 12,103.32 : x
  2. Step 2: Convert to fraction form
    20,443.80/30,647.70 = 12,103.32/x
  3. Step 3: Cross multiply
    20,443.80x = 30,647.70 × 12,103.32
  4. Step 4: Simplify right side
    20,443.80x = 370,938,920.36
  5. Step 5: Solve for x
    x = 370,938,920.36/20,443.80
  6. Step 6: Final answer
    x = 18,144.32

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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.