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Finding the Fourth Proportional to 13,169.08, 19,756.86 and 12,089.08

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Solution

The fourth proportional to 13,169.08, 19,756.86 and 12,089.08 is: 18,136.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.08 : 19,756.86 = 12,089.08 : x
  2. Step 2: Convert to fraction form
    13,169.08/19,756.86 = 12,089.08/x
  3. Step 3: Cross multiply
    13,169.08x = 19,756.86 × 12,089.08
  4. Step 4: Simplify right side
    13,169.08x = 238,842,261.09
  5. Step 5: Solve for x
    x = 238,842,261.09/13,169.08
  6. Step 6: Final answer
    x = 18,136.59

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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.