Home / 21,355.86-29,471.11-11,924.42

Finding the Fourth Proportional to 21,355.86, 29,471.11 and 11,924.42

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Solution

The fourth proportional to 21,355.86, 29,471.11 and 11,924.42 is: 16,455.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,355.86 : 29,471.11 = 11,924.42 : x
  2. Step 2: Convert to fraction form
    21,355.86/29,471.11 = 11,924.42/x
  3. Step 3: Cross multiply
    21,355.86x = 29,471.11 × 11,924.42
  4. Step 4: Simplify right side
    21,355.86x = 351,425,893.51
  5. Step 5: Solve for x
    x = 351,425,893.51/21,355.86
  6. Step 6: Final answer
    x = 16,455.71

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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.