Home / 21,057.58-31,563.68-11,186.92

Finding the Fourth Proportional to 21,057.58, 31,563.68 and 11,186.92

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Solution

The fourth proportional to 21,057.58, 31,563.68 and 11,186.92 is: 16,768.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.58 : 31,563.68 = 11,186.92 : x
  2. Step 2: Convert to fraction form
    21,057.58/31,563.68 = 11,186.92/x
  3. Step 3: Cross multiply
    21,057.58x = 31,563.68 × 11,186.92
  4. Step 4: Simplify right side
    21,057.58x = 353,100,307.13
  5. Step 5: Solve for x
    x = 353,100,307.13/21,057.58
  6. Step 6: Final answer
    x = 16,768.32

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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.