Home / 12,452.79-18,679.15-3,688.39

Finding the Fourth Proportional to 12,452.79, 18,679.15 and 3,688.39

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Solution

The fourth proportional to 12,452.79, 18,679.15 and 3,688.39 is: 5,532.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,452.79 : 18,679.15 = 3,688.39 : x
  2. Step 2: Convert to fraction form
    12,452.79/18,679.15 = 3,688.39/x
  3. Step 3: Cross multiply
    12,452.79x = 18,679.15 × 3,688.39
  4. Step 4: Simplify right side
    12,452.79x = 68,895,990.07
  5. Step 5: Solve for x
    x = 68,895,990.07/12,452.79
  6. Step 6: Final answer
    x = 5,532.57

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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.