Home / 21,589.08-29,797.38-12,641.28

Finding the Fourth Proportional to 21,589.08, 29,797.38 and 12,641.28

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Solution

The fourth proportional to 21,589.08, 29,797.38 and 12,641.28 is: 17,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.08 : 29,797.38 = 12,641.28 : x
  2. Step 2: Convert to fraction form
    21,589.08/29,797.38 = 12,641.28/x
  3. Step 3: Cross multiply
    21,589.08x = 29,797.38 × 12,641.28
  4. Step 4: Simplify right side
    21,589.08x = 376,677,023.85
  5. Step 5: Solve for x
    x = 376,677,023.85/21,589.08
  6. Step 6: Final answer
    x = 17,447.57

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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.