Home / 12,493.68-18,740.51-4,172.14

Finding the Fourth Proportional to 12,493.68, 18,740.51 and 4,172.14

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Solution

The fourth proportional to 12,493.68, 18,740.51 and 4,172.14 is: 6,258.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,493.68 : 18,740.51 = 4,172.14 : x
  2. Step 2: Convert to fraction form
    12,493.68/18,740.51 = 4,172.14/x
  3. Step 3: Cross multiply
    12,493.68x = 18,740.51 × 4,172.14
  4. Step 4: Simplify right side
    12,493.68x = 78,188,031.39
  5. Step 5: Solve for x
    x = 78,188,031.39/12,493.68
  6. Step 6: Final answer
    x = 6,258.21

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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.