Home / 21,315.24-29,410.56-11,883.60

Finding the Fourth Proportional to 21,315.24, 29,410.56 and 11,883.60

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Solution

The fourth proportional to 21,315.24, 29,410.56 and 11,883.60 is: 16,396.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.24 : 29,410.56 = 11,883.60 : x
  2. Step 2: Convert to fraction form
    21,315.24/29,410.56 = 11,883.60/x
  3. Step 3: Cross multiply
    21,315.24x = 29,410.56 × 11,883.60
  4. Step 4: Simplify right side
    21,315.24x = 349,503,330.82
  5. Step 5: Solve for x
    x = 349,503,330.82/21,315.24
  6. Step 6: Final answer
    x = 16,396.88

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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.