Home / 21,353.64-29,465.28-11,922.60

Finding the Fourth Proportional to 21,353.64, 29,465.28 and 11,922.60

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Solution

The fourth proportional to 21,353.64, 29,465.28 and 11,922.60 is: 16,451.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.64 : 29,465.28 = 11,922.60 : x
  2. Step 2: Convert to fraction form
    21,353.64/29,465.28 = 11,922.60/x
  3. Step 3: Cross multiply
    21,353.64x = 29,465.28 × 11,922.60
  4. Step 4: Simplify right side
    21,353.64x = 351,302,747.33
  5. Step 5: Solve for x
    x = 351,302,747.33/21,353.64
  6. Step 6: Final answer
    x = 16,451.66

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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.