Home / 21,339.30-29,446.47-11,907.66

Finding the Fourth Proportional to 21,339.30, 29,446.47 and 11,907.66

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Solution

The fourth proportional to 21,339.30, 29,446.47 and 11,907.66 is: 16,431.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.30 : 29,446.47 = 11,907.66 : x
  2. Step 2: Convert to fraction form
    21,339.30/29,446.47 = 11,907.66/x
  3. Step 3: Cross multiply
    21,339.30x = 29,446.47 × 11,907.66
  4. Step 4: Simplify right side
    21,339.30x = 350,638,552.96
  5. Step 5: Solve for x
    x = 350,638,552.96/21,339.30
  6. Step 6: Final answer
    x = 16,431.59

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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.