Home / 20,454.12-30,681.21-6,222.72

Finding the Fourth Proportional to 20,454.12, 30,681.21 and 6,222.72

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Solution

The fourth proportional to 20,454.12, 30,681.21 and 6,222.72 is: 9,334.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.12 : 30,681.21 = 6,222.72 : x
  2. Step 2: Convert to fraction form
    20,454.12/30,681.21 = 6,222.72/x
  3. Step 3: Cross multiply
    20,454.12x = 30,681.21 × 6,222.72
  4. Step 4: Simplify right side
    20,454.12x = 190,920,579.09
  5. Step 5: Solve for x
    x = 190,920,579.09/20,454.12
  6. Step 6: Final answer
    x = 9,334.09

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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.