Home / 12,456.79-18,683.36-4,136.62

Finding the Fourth Proportional to 12,456.79, 18,683.36 and 4,136.62

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Solution

The fourth proportional to 12,456.79, 18,683.36 and 4,136.62 is: 6,204.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.79 : 18,683.36 = 4,136.62 : x
  2. Step 2: Convert to fraction form
    12,456.79/18,683.36 = 4,136.62/x
  3. Step 3: Cross multiply
    12,456.79x = 18,683.36 × 4,136.62
  4. Step 4: Simplify right side
    12,456.79x = 77,285,943.80
  5. Step 5: Solve for x
    x = 77,285,943.80/12,456.79
  6. Step 6: Final answer
    x = 6,204.32

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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.