Home / 20,184.70-30,240.60-12,384.40

Finding the Fourth Proportional to 20,184.70, 30,240.60 and 12,384.40

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Solution

The fourth proportional to 20,184.70, 30,240.60 and 12,384.40 is: 18,554.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,184.70 : 30,240.60 = 12,384.40 : x
  2. Step 2: Convert to fraction form
    20,184.70/30,240.60 = 12,384.40/x
  3. Step 3: Cross multiply
    20,184.70x = 30,240.60 × 12,384.40
  4. Step 4: Simplify right side
    20,184.70x = 374,511,686.64
  5. Step 5: Solve for x
    x = 374,511,686.64/20,184.70
  6. Step 6: Final answer
    x = 18,554.24

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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.