Home / 19,188.82-28,779.74-8,103.30

Finding the Fourth Proportional to 19,188.82, 28,779.74 and 8,103.30

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Solution

The fourth proportional to 19,188.82, 28,779.74 and 8,103.30 is: 12,153.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.82 : 28,779.74 = 8,103.30 : x
  2. Step 2: Convert to fraction form
    19,188.82/28,779.74 = 8,103.30/x
  3. Step 3: Cross multiply
    19,188.82x = 28,779.74 × 8,103.30
  4. Step 4: Simplify right side
    19,188.82x = 233,210,749.09
  5. Step 5: Solve for x
    x = 233,210,749.09/19,188.82
  6. Step 6: Final answer
    x = 12,153.47

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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.