Home / 21,299.63-29,393.48-11,739.51

Finding the Fourth Proportional to 21,299.63, 29,393.48 and 11,739.51

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Solution

The fourth proportional to 21,299.63, 29,393.48 and 11,739.51 is: 16,200.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.63 : 29,393.48 = 11,739.51 : x
  2. Step 2: Convert to fraction form
    21,299.63/29,393.48 = 11,739.51/x
  3. Step 3: Cross multiply
    21,299.63x = 29,393.48 × 11,739.51
  4. Step 4: Simplify right side
    21,299.63x = 345,065,052.39
  5. Step 5: Solve for x
    x = 345,065,052.39/21,299.63
  6. Step 6: Final answer
    x = 16,200.52

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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.