Home / 12,990.36-17,927.10-7,401

Finding the Fourth Proportional to 12,990.36, 17,927.10 and 7,401

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Solution

The fourth proportional to 12,990.36, 17,927.10 and 7,401 is: 10,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.36 : 17,927.10 = 7,401 : x
  2. Step 2: Convert to fraction form
    12,990.36/17,927.10 = 7,401/x
  3. Step 3: Cross multiply
    12,990.36x = 17,927.10 × 7,401
  4. Step 4: Simplify right side
    12,990.36x = 132,678,467.10
  5. Step 5: Solve for x
    x = 132,678,467.10/12,990.36
  6. Step 6: Final answer
    x = 10,213.61

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1.5x scale

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.