Home / 12,623.43-18,914.22-7,678.11

Finding the Fourth Proportional to 12,623.43, 18,914.22 and 7,678.11

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Solution

The fourth proportional to 12,623.43, 18,914.22 and 7,678.11 is: 11,504.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.43 : 18,914.22 = 7,678.11 : x
  2. Step 2: Convert to fraction form
    12,623.43/18,914.22 = 7,678.11/x
  3. Step 3: Cross multiply
    12,623.43x = 18,914.22 × 7,678.11
  4. Step 4: Simplify right side
    12,623.43x = 145,225,461.72
  5. Step 5: Solve for x
    x = 145,225,461.72/12,623.43
  6. Step 6: Final answer
    x = 11,504.44

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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.