Home / 21,353.36-29,465.16-11,921.60

Finding the Fourth Proportional to 21,353.36, 29,465.16 and 11,921.60

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Solution

The fourth proportional to 21,353.36, 29,465.16 and 11,921.60 is: 16,450.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.36 : 29,465.16 = 11,921.60 : x
  2. Step 2: Convert to fraction form
    21,353.36/29,465.16 = 11,921.60/x
  3. Step 3: Cross multiply
    21,353.36x = 29,465.16 × 11,921.60
  4. Step 4: Simplify right side
    21,353.36x = 351,271,851.46
  5. Step 5: Solve for x
    x = 351,271,851.46/21,353.36
  6. Step 6: Final answer
    x = 16,450.43

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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.