Home / 19,921.55-29,885.39-6,770.84

Finding the Fourth Proportional to 19,921.55, 29,885.39 and 6,770.84

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Solution

The fourth proportional to 19,921.55, 29,885.39 and 6,770.84 is: 10,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.55 : 29,885.39 = 6,770.84 : x
  2. Step 2: Convert to fraction form
    19,921.55/29,885.39 = 6,770.84/x
  3. Step 3: Cross multiply
    19,921.55x = 29,885.39 × 6,770.84
  4. Step 4: Simplify right side
    19,921.55x = 202,349,010.75
  5. Step 5: Solve for x
    x = 202,349,010.75/19,921.55
  6. Step 6: Final answer
    x = 10,157.30

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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.