Home / 15,707.36-21,676.48-8,633.76

Finding the Fourth Proportional to 15,707.36, 21,676.48 and 8,633.76

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Solution

The fourth proportional to 15,707.36, 21,676.48 and 8,633.76 is: 11,914.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.36 : 21,676.48 = 8,633.76 : x
  2. Step 2: Convert to fraction form
    15,707.36/21,676.48 = 8,633.76/x
  3. Step 3: Cross multiply
    15,707.36x = 21,676.48 × 8,633.76
  4. Step 4: Simplify right side
    15,707.36x = 187,149,525.96
  5. Step 5: Solve for x
    x = 187,149,525.96/15,707.36
  6. Step 6: Final answer
    x = 11,914.77

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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.