Home / 21,436.31-29,582.05-11,876.21

Finding the Fourth Proportional to 21,436.31, 29,582.05 and 11,876.21

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Solution

The fourth proportional to 21,436.31, 29,582.05 and 11,876.21 is: 16,389.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.31 : 29,582.05 = 11,876.21 : x
  2. Step 2: Convert to fraction form
    21,436.31/29,582.05 = 11,876.21/x
  3. Step 3: Cross multiply
    21,436.31x = 29,582.05 × 11,876.21
  4. Step 4: Simplify right side
    21,436.31x = 351,322,638.03
  5. Step 5: Solve for x
    x = 351,322,638.03/21,436.31
  6. Step 6: Final answer
    x = 16,389.14

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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.