Home / 15,679.96-21,638.26-8,606.32

Finding the Fourth Proportional to 15,679.96, 21,638.26 and 8,606.32

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Solution

The fourth proportional to 15,679.96, 21,638.26 and 8,606.32 is: 11,876.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.96 : 21,638.26 = 8,606.32 : x
  2. Step 2: Convert to fraction form
    15,679.96/21,638.26 = 8,606.32/x
  3. Step 3: Cross multiply
    15,679.96x = 21,638.26 × 8,606.32
  4. Step 4: Simplify right side
    15,679.96x = 186,225,789.80
  5. Step 5: Solve for x
    x = 186,225,789.80/15,679.96
  6. Step 6: Final answer
    x = 11,876.68

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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.