Home / 21,436.44-29,595.42-16,978.20

Finding the Fourth Proportional to 21,436.44, 29,595.42 and 16,978.20

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Solution

The fourth proportional to 21,436.44, 29,595.42 and 16,978.20 is: 23,440.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.44 : 29,595.42 = 16,978.20 : x
  2. Step 2: Convert to fraction form
    21,436.44/29,595.42 = 16,978.20/x
  3. Step 3: Cross multiply
    21,436.44x = 29,595.42 × 16,978.20
  4. Step 4: Simplify right side
    21,436.44x = 502,476,959.84
  5. Step 5: Solve for x
    x = 502,476,959.84/21,436.44
  6. Step 6: Final answer
    x = 23,440.32

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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.