Home / 20,108.81-30,168.69-6,962.21

Finding the Fourth Proportional to 20,108.81, 30,168.69 and 6,962.21

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Solution

The fourth proportional to 20,108.81, 30,168.69 and 6,962.21 is: 10,445.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.81 : 30,168.69 = 6,962.21 : x
  2. Step 2: Convert to fraction form
    20,108.81/30,168.69 = 6,962.21/x
  3. Step 3: Cross multiply
    20,108.81x = 30,168.69 × 6,962.21
  4. Step 4: Simplify right side
    20,108.81x = 210,040,830.63
  5. Step 5: Solve for x
    x = 210,040,830.63/20,108.81
  6. Step 6: Final answer
    x = 10,445.21

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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.