Home / 21,507.12-29,676.96-12,553.92

Finding the Fourth Proportional to 21,507.12, 29,676.96 and 12,553.92

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Solution

The fourth proportional to 21,507.12, 29,676.96 and 12,553.92 is: 17,322.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.12 : 29,676.96 = 12,553.92 : x
  2. Step 2: Convert to fraction form
    21,507.12/29,676.96 = 12,553.92/x
  3. Step 3: Cross multiply
    21,507.12x = 29,676.96 × 12,553.92
  4. Step 4: Simplify right side
    21,507.12x = 372,562,181.68
  5. Step 5: Solve for x
    x = 372,562,181.68/21,507.12
  6. Step 6: Final answer
    x = 17,322.74

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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.