Home / 12,457.55-18,683.15-3,690.42

Finding the Fourth Proportional to 12,457.55, 18,683.15 and 3,690.42

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Solution

The fourth proportional to 12,457.55, 18,683.15 and 3,690.42 is: 5,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.55 : 18,683.15 = 3,690.42 : x
  2. Step 2: Convert to fraction form
    12,457.55/18,683.15 = 3,690.42/x
  3. Step 3: Cross multiply
    12,457.55x = 18,683.15 × 3,690.42
  4. Step 4: Simplify right side
    12,457.55x = 68,948,581.91
  5. Step 5: Solve for x
    x = 68,948,581.91/12,457.55
  6. Step 6: Final answer
    x = 5,534.68

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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.