Home / 13,091.54-19,638.66-8,159.86

Finding the Fourth Proportional to 13,091.54, 19,638.66 and 8,159.86

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Solution

The fourth proportional to 13,091.54, 19,638.66 and 8,159.86 is: 12,240.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.54 : 19,638.66 = 8,159.86 : x
  2. Step 2: Convert to fraction form
    13,091.54/19,638.66 = 8,159.86/x
  3. Step 3: Cross multiply
    13,091.54x = 19,638.66 × 8,159.86
  4. Step 4: Simplify right side
    13,091.54x = 160,248,636.49
  5. Step 5: Solve for x
    x = 160,248,636.49/13,091.54
  6. Step 6: Final answer
    x = 12,240.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.