Home / 19,306.80-29,003.40-18,519.60

Finding the Fourth Proportional to 19,306.80, 29,003.40 and 18,519.60

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Solution

The fourth proportional to 19,306.80, 29,003.40 and 18,519.60 is: 27,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,306.80 : 29,003.40 = 18,519.60 : x
  2. Step 2: Convert to fraction form
    19,306.80/29,003.40 = 18,519.60/x
  3. Step 3: Cross multiply
    19,306.80x = 29,003.40 × 18,519.60
  4. Step 4: Simplify right side
    19,306.80x = 537,131,366.64
  5. Step 5: Solve for x
    x = 537,131,366.64/19,306.80
  6. Step 6: Final answer
    x = 27,820.84

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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.