Home / 21,427.30-29,555.58-16,392.34

Finding the Fourth Proportional to 21,427.30, 29,555.58 and 16,392.34

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Solution

The fourth proportional to 21,427.30, 29,555.58 and 16,392.34 is: 22,610.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.30 : 29,555.58 = 16,392.34 : x
  2. Step 2: Convert to fraction form
    21,427.30/29,555.58 = 16,392.34/x
  3. Step 3: Cross multiply
    21,427.30x = 29,555.58 × 16,392.34
  4. Step 4: Simplify right side
    21,427.30x = 484,485,116.26
  5. Step 5: Solve for x
    x = 484,485,116.26/21,427.30
  6. Step 6: Final answer
    x = 22,610.65

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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.