Home / 15,391.96-21,239.26-8,677.44

Finding the Fourth Proportional to 15,391.96, 21,239.26 and 8,677.44

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Solution

The fourth proportional to 15,391.96, 21,239.26 and 8,677.44 is: 11,973.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.96 : 21,239.26 = 8,677.44 : x
  2. Step 2: Convert to fraction form
    15,391.96/21,239.26 = 8,677.44/x
  3. Step 3: Cross multiply
    15,391.96x = 21,239.26 × 8,677.44
  4. Step 4: Simplify right side
    15,391.96x = 184,302,404.29
  5. Step 5: Solve for x
    x = 184,302,404.29/15,391.96
  6. Step 6: Final answer
    x = 11,973.94

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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.