Home / 21,716.24-29,971.08-12,764.57

Finding the Fourth Proportional to 21,716.24, 29,971.08 and 12,764.57

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Solution

The fourth proportional to 21,716.24, 29,971.08 and 12,764.57 is: 17,616.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.24 : 29,971.08 = 12,764.57 : x
  2. Step 2: Convert to fraction form
    21,716.24/29,971.08 = 12,764.57/x
  3. Step 3: Cross multiply
    21,716.24x = 29,971.08 × 12,764.57
  4. Step 4: Simplify right side
    21,716.24x = 382,567,798.78
  5. Step 5: Solve for x
    x = 382,567,798.78/21,716.24
  6. Step 6: Final answer
    x = 17,616.67

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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.