Home / 21,832.10-30,139.65-16,976.06

Finding the Fourth Proportional to 21,832.10, 30,139.65 and 16,976.06

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Solution

The fourth proportional to 21,832.10, 30,139.65 and 16,976.06 is: 23,435.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.10 : 30,139.65 = 16,976.06 : x
  2. Step 2: Convert to fraction form
    21,832.10/30,139.65 = 16,976.06/x
  3. Step 3: Cross multiply
    21,832.10x = 30,139.65 × 16,976.06
  4. Step 4: Simplify right side
    21,832.10x = 511,652,506.78
  5. Step 5: Solve for x
    x = 511,652,506.78/21,832.10
  6. Step 6: Final answer
    x = 23,435.79

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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.