Home / 19,089.60-28,634.40-7,992.60

Finding the Fourth Proportional to 19,089.60, 28,634.40 and 7,992.60

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Solution

The fourth proportional to 19,089.60, 28,634.40 and 7,992.60 is: 11,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,089.60 : 28,634.40 = 7,992.60 : x
  2. Step 2: Convert to fraction form
    19,089.60/28,634.40 = 7,992.60/x
  3. Step 3: Cross multiply
    19,089.60x = 28,634.40 × 7,992.60
  4. Step 4: Simplify right side
    19,089.60x = 228,863,305.44
  5. Step 5: Solve for x
    x = 228,863,305.44/19,089.60
  6. Step 6: Final answer
    x = 11,988.90

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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.