Home / 12,989.08-17,926.14-7,399

Finding the Fourth Proportional to 12,989.08, 17,926.14 and 7,399

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Solution

The fourth proportional to 12,989.08, 17,926.14 and 7,399 is: 10,211.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.08 : 17,926.14 = 7,399 : x
  2. Step 2: Convert to fraction form
    12,989.08/17,926.14 = 7,399/x
  3. Step 3: Cross multiply
    12,989.08x = 17,926.14 × 7,399
  4. Step 4: Simplify right side
    12,989.08x = 132,635,509.86
  5. Step 5: Solve for x
    x = 132,635,509.86/12,989.08
  6. Step 6: Final answer
    x = 10,211.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.