Home / 21,436.38-32,156.07-6,643.32

Finding the Fourth Proportional to 21,436.38, 32,156.07 and 6,643.32

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Solution

The fourth proportional to 21,436.38, 32,156.07 and 6,643.32 is: 9,965.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.38 : 32,156.07 = 6,643.32 : x
  2. Step 2: Convert to fraction form
    21,436.38/32,156.07 = 6,643.32/x
  3. Step 3: Cross multiply
    21,436.38x = 32,156.07 × 6,643.32
  4. Step 4: Simplify right side
    21,436.38x = 213,623,062.95
  5. Step 5: Solve for x
    x = 213,623,062.95/21,436.38
  6. Step 6: Final answer
    x = 9,965.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.