Home / 21,546.88-29,734.50-12,115.51

Finding the Fourth Proportional to 21,546.88, 29,734.50 and 12,115.51

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Solution

The fourth proportional to 21,546.88, 29,734.50 and 12,115.51 is: 16,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,546.88 : 29,734.50 = 12,115.51 : x
  2. Step 2: Convert to fraction form
    21,546.88/29,734.50 = 12,115.51/x
  3. Step 3: Cross multiply
    21,546.88x = 29,734.50 × 12,115.51
  4. Step 4: Simplify right side
    21,546.88x = 360,248,632.10
  5. Step 5: Solve for x
    x = 360,248,632.10/21,546.88
  6. Step 6: Final answer
    x = 16,719.29

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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.