Home / 21,057.33-31,563.30-11,186.67

Finding the Fourth Proportional to 21,057.33, 31,563.30 and 11,186.67

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Solution

The fourth proportional to 21,057.33, 31,563.30 and 11,186.67 is: 16,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.33 : 31,563.30 = 11,186.67 : x
  2. Step 2: Convert to fraction form
    21,057.33/31,563.30 = 11,186.67/x
  3. Step 3: Cross multiply
    21,057.33x = 31,563.30 × 11,186.67
  4. Step 4: Simplify right side
    21,057.33x = 353,088,221.21
  5. Step 5: Solve for x
    x = 353,088,221.21/21,057.33
  6. Step 6: Final answer
    x = 16,767.95

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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.