Home / 12,679.10-19,008.38-5,289.10

Finding the Fourth Proportional to 12,679.10, 19,008.38 and 5,289.10

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Solution

The fourth proportional to 12,679.10, 19,008.38 and 5,289.10 is: 7,929.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.10 : 19,008.38 = 5,289.10 : x
  2. Step 2: Convert to fraction form
    12,679.10/19,008.38 = 5,289.10/x
  3. Step 3: Cross multiply
    12,679.10x = 19,008.38 × 5,289.10
  4. Step 4: Simplify right side
    12,679.10x = 100,537,222.66
  5. Step 5: Solve for x
    x = 100,537,222.66/12,679.10
  6. Step 6: Final answer
    x = 7,929.37

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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.