Home / 19,111.72-28,668.90-8,007.25

Finding the Fourth Proportional to 19,111.72, 28,668.90 and 8,007.25

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Solution

The fourth proportional to 19,111.72, 28,668.90 and 8,007.25 is: 12,011.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.72 : 28,668.90 = 8,007.25 : x
  2. Step 2: Convert to fraction form
    19,111.72/28,668.90 = 8,007.25/x
  3. Step 3: Cross multiply
    19,111.72x = 28,668.90 × 8,007.25
  4. Step 4: Simplify right side
    19,111.72x = 229,559,049.53
  5. Step 5: Solve for x
    x = 229,559,049.53/19,111.72
  6. Step 6: Final answer
    x = 12,011.43

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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.