Home / 15,749.21-21,733.11-8,675.48

Finding the Fourth Proportional to 15,749.21, 21,733.11 and 8,675.48

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Solution

The fourth proportional to 15,749.21, 21,733.11 and 8,675.48 is: 11,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.21 : 21,733.11 = 8,675.48 : x
  2. Step 2: Convert to fraction form
    15,749.21/21,733.11 = 8,675.48/x
  3. Step 3: Cross multiply
    15,749.21x = 21,733.11 × 8,675.48
  4. Step 4: Simplify right side
    15,749.21x = 188,545,161.14
  5. Step 5: Solve for x
    x = 188,545,161.14/15,749.21
  6. Step 6: Final answer
    x = 11,971.72

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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.