Home / 21,448.74-29,600.35-11,889.64

Finding the Fourth Proportional to 21,448.74, 29,600.35 and 11,889.64

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Solution

The fourth proportional to 21,448.74, 29,600.35 and 11,889.64 is: 16,408.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,448.74 : 29,600.35 = 11,889.64 : x
  2. Step 2: Convert to fraction form
    21,448.74/29,600.35 = 11,889.64/x
  3. Step 3: Cross multiply
    21,448.74x = 29,600.35 × 11,889.64
  4. Step 4: Simplify right side
    21,448.74x = 351,937,505.37
  5. Step 5: Solve for x
    x = 351,937,505.37/21,448.74
  6. Step 6: Final answer
    x = 16,408.31

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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.