Home / 12,621.88-18,926.54-7,358.70

Finding the Fourth Proportional to 12,621.88, 18,926.54 and 7,358.70

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Solution

The fourth proportional to 12,621.88, 18,926.54 and 7,358.70 is: 11,034.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.88 : 18,926.54 = 7,358.70 : x
  2. Step 2: Convert to fraction form
    12,621.88/18,926.54 = 7,358.70/x
  3. Step 3: Cross multiply
    12,621.88x = 18,926.54 × 7,358.70
  4. Step 4: Simplify right side
    12,621.88x = 139,274,729.90
  5. Step 5: Solve for x
    x = 139,274,729.90/12,621.88
  6. Step 6: Final answer
    x = 11,034.39

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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.