Home / 19,231.90-28,858.65-8,136.70

Finding the Fourth Proportional to 19,231.90, 28,858.65 and 8,136.70

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Solution

The fourth proportional to 19,231.90, 28,858.65 and 8,136.70 is: 12,209.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.90 : 28,858.65 = 8,136.70 : x
  2. Step 2: Convert to fraction form
    19,231.90/28,858.65 = 8,136.70/x
  3. Step 3: Cross multiply
    19,231.90x = 28,858.65 × 8,136.70
  4. Step 4: Simplify right side
    19,231.90x = 234,814,177.46
  5. Step 5: Solve for x
    x = 234,814,177.46/19,231.90
  6. Step 6: Final answer
    x = 12,209.62

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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.