Home / 19,770.40-29,655.60-8,080.89

Finding the Fourth Proportional to 19,770.40, 29,655.60 and 8,080.89

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Solution

The fourth proportional to 19,770.40, 29,655.60 and 8,080.89 is: 12,121.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.40 : 29,655.60 = 8,080.89 : x
  2. Step 2: Convert to fraction form
    19,770.40/29,655.60 = 8,080.89/x
  3. Step 3: Cross multiply
    19,770.40x = 29,655.60 × 8,080.89
  4. Step 4: Simplify right side
    19,770.40x = 239,643,493.21
  5. Step 5: Solve for x
    x = 239,643,493.21/19,770.40
  6. Step 6: Final answer
    x = 12,121.33

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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.