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Finding the Fourth Proportional to 19,672.86, 29,521.56 and 7,986.08

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Solution

The fourth proportional to 19,672.86, 29,521.56 and 7,986.08 is: 11,984.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.86 : 29,521.56 = 7,986.08 : x
  2. Step 2: Convert to fraction form
    19,672.86/29,521.56 = 7,986.08/x
  3. Step 3: Cross multiply
    19,672.86x = 29,521.56 × 7,986.08
  4. Step 4: Simplify right side
    19,672.86x = 235,761,392.28
  5. Step 5: Solve for x
    x = 235,761,392.28/19,672.86
  6. Step 6: Final answer
    x = 11,984.09

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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.