Home / 21,464.90-29,623.28-11,905.73

Finding the Fourth Proportional to 21,464.90, 29,623.28 and 11,905.73

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Solution

The fourth proportional to 21,464.90, 29,623.28 and 11,905.73 is: 16,430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,464.90 : 29,623.28 = 11,905.73 : x
  2. Step 2: Convert to fraction form
    21,464.90/29,623.28 = 11,905.73/x
  3. Step 3: Cross multiply
    21,464.90x = 29,623.28 × 11,905.73
  4. Step 4: Simplify right side
    21,464.90x = 352,686,565.75
  5. Step 5: Solve for x
    x = 352,686,565.75/21,464.90
  6. Step 6: Final answer
    x = 16,430.85

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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.