Home / 21,418.46-29,556.47-11,857.67

Finding the Fourth Proportional to 21,418.46, 29,556.47 and 11,857.67

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Solution

The fourth proportional to 21,418.46, 29,556.47 and 11,857.67 is: 16,363.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.46 : 29,556.47 = 11,857.67 : x
  2. Step 2: Convert to fraction form
    21,418.46/29,556.47 = 11,857.67/x
  3. Step 3: Cross multiply
    21,418.46x = 29,556.47 × 11,857.67
  4. Step 4: Simplify right side
    21,418.46x = 350,470,808.34
  5. Step 5: Solve for x
    x = 350,470,808.34/21,418.46
  6. Step 6: Final answer
    x = 16,363.03

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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.