Home / 21,353.81-29,468.30-11,922.71

Finding the Fourth Proportional to 21,353.81, 29,468.30 and 11,922.71

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Solution

The fourth proportional to 21,353.81, 29,468.30 and 11,922.71 is: 16,453.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.81 : 29,468.30 = 11,922.71 : x
  2. Step 2: Convert to fraction form
    21,353.81/29,468.30 = 11,922.71/x
  3. Step 3: Cross multiply
    21,353.81x = 29,468.30 × 11,922.71
  4. Step 4: Simplify right side
    21,353.81x = 351,341,788.14
  5. Step 5: Solve for x
    x = 351,341,788.14/21,353.81
  6. Step 6: Final answer
    x = 16,453.36

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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.