Home / 12,457.12-18,684.60-4,136.80

Finding the Fourth Proportional to 12,457.12, 18,684.60 and 4,136.80

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Solution

The fourth proportional to 12,457.12, 18,684.60 and 4,136.80 is: 6,204.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.12 : 18,684.60 = 4,136.80 : x
  2. Step 2: Convert to fraction form
    12,457.12/18,684.60 = 4,136.80/x
  3. Step 3: Cross multiply
    12,457.12x = 18,684.60 × 4,136.80
  4. Step 4: Simplify right side
    12,457.12x = 77,294,453.28
  5. Step 5: Solve for x
    x = 77,294,453.28/12,457.12
  6. Step 6: Final answer
    x = 6,204.84

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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.