Home / 21,508.80-29,682.96-12,554.88

Finding the Fourth Proportional to 21,508.80, 29,682.96 and 12,554.88

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Solution

The fourth proportional to 21,508.80, 29,682.96 and 12,554.88 is: 17,326.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.80 : 29,682.96 = 12,554.88 : x
  2. Step 2: Convert to fraction form
    21,508.80/29,682.96 = 12,554.88/x
  3. Step 3: Cross multiply
    21,508.80x = 29,682.96 × 12,554.88
  4. Step 4: Simplify right side
    21,508.80x = 372,666,000.84
  5. Step 5: Solve for x
    x = 372,666,000.84/21,508.80
  6. Step 6: Final answer
    x = 17,326.21

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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.