Home / 15,707.34-21,676.14-8,633.88

Finding the Fourth Proportional to 15,707.34, 21,676.14 and 8,633.88

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Solution

The fourth proportional to 15,707.34, 21,676.14 and 8,633.88 is: 11,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.34 : 21,676.14 = 8,633.88 : x
  2. Step 2: Convert to fraction form
    15,707.34/21,676.14 = 8,633.88/x
  3. Step 3: Cross multiply
    15,707.34x = 21,676.14 × 8,633.88
  4. Step 4: Simplify right side
    15,707.34x = 187,149,191.62
  5. Step 5: Solve for x
    x = 187,149,191.62/15,707.34
  6. Step 6: Final answer
    x = 11,914.76

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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.