Home / 12,623.24-18,938.79-5,231.18

Finding the Fourth Proportional to 12,623.24, 18,938.79 and 5,231.18

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Solution

The fourth proportional to 12,623.24, 18,938.79 and 5,231.18 is: 7,848.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.24 : 18,938.79 = 5,231.18 : x
  2. Step 2: Convert to fraction form
    12,623.24/18,938.79 = 5,231.18/x
  3. Step 3: Cross multiply
    12,623.24x = 18,938.79 × 5,231.18
  4. Step 4: Simplify right side
    12,623.24x = 99,072,124.78
  5. Step 5: Solve for x
    x = 99,072,124.78/12,623.24
  6. Step 6: Final answer
    x = 7,848.39

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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.