Home / 19,986.05-29,968.06-8,136.79

Finding the Fourth Proportional to 19,986.05, 29,968.06 and 8,136.79

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Solution

The fourth proportional to 19,986.05, 29,968.06 and 8,136.79 is: 12,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.05 : 29,968.06 = 8,136.79 : x
  2. Step 2: Convert to fraction form
    19,986.05/29,968.06 = 8,136.79/x
  3. Step 3: Cross multiply
    19,986.05x = 29,968.06 × 8,136.79
  4. Step 4: Simplify right side
    19,986.05x = 243,843,810.93
  5. Step 5: Solve for x
    x = 243,843,810.93/19,986.05
  6. Step 6: Final answer
    x = 12,200.70

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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.