Home / 21,338.75-29,447.42-11,907.32

Finding the Fourth Proportional to 21,338.75, 29,447.42 and 11,907.32

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Solution

The fourth proportional to 21,338.75, 29,447.42 and 11,907.32 is: 16,432.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.75 : 29,447.42 = 11,907.32 : x
  2. Step 2: Convert to fraction form
    21,338.75/29,447.42 = 11,907.32/x
  3. Step 3: Cross multiply
    21,338.75x = 29,447.42 × 11,907.32
  4. Step 4: Simplify right side
    21,338.75x = 350,639,646.34
  5. Step 5: Solve for x
    x = 350,639,646.34/21,338.75
  6. Step 6: Final answer
    x = 16,432.06

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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.