Home / 20,112.40-30,168.72-6,072.44

Finding the Fourth Proportional to 20,112.40, 30,168.72 and 6,072.44

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Solution

The fourth proportional to 20,112.40, 30,168.72 and 6,072.44 is: 9,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.40 : 30,168.72 = 6,072.44 : x
  2. Step 2: Convert to fraction form
    20,112.40/30,168.72 = 6,072.44/x
  3. Step 3: Cross multiply
    20,112.40x = 30,168.72 × 6,072.44
  4. Step 4: Simplify right side
    20,112.40x = 183,197,742.08
  5. Step 5: Solve for x
    x = 183,197,742.08/20,112.40
  6. Step 6: Final answer
    x = 9,108.70

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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.