Home / 21,245.49-29,319.57-11,814.66

Finding the Fourth Proportional to 21,245.49, 29,319.57 and 11,814.66

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Solution

The fourth proportional to 21,245.49, 29,319.57 and 11,814.66 is: 16,304.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.49 : 29,319.57 = 11,814.66 : x
  2. Step 2: Convert to fraction form
    21,245.49/29,319.57 = 11,814.66/x
  3. Step 3: Cross multiply
    21,245.49x = 29,319.57 × 11,814.66
  4. Step 4: Simplify right side
    21,245.49x = 346,400,750.90
  5. Step 5: Solve for x
    x = 346,400,750.90/21,245.49
  6. Step 6: Final answer
    x = 16,304.67

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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.