Home / 21,432.87-29,577.36-11,873.38

Finding the Fourth Proportional to 21,432.87, 29,577.36 and 11,873.38

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Solution

The fourth proportional to 21,432.87, 29,577.36 and 11,873.38 is: 16,385.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.87 : 29,577.36 = 11,873.38 : x
  2. Step 2: Convert to fraction form
    21,432.87/29,577.36 = 11,873.38/x
  3. Step 3: Cross multiply
    21,432.87x = 29,577.36 × 11,873.38
  4. Step 4: Simplify right side
    21,432.87x = 351,183,160.73
  5. Step 5: Solve for x
    x = 351,183,160.73/21,432.87
  6. Step 6: Final answer
    x = 16,385.26

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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.