Home / 13,091.12-19,624.12-8,398

Finding the Fourth Proportional to 13,091.12, 19,624.12 and 8,398

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Solution

The fourth proportional to 13,091.12, 19,624.12 and 8,398 is: 12,588.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.12 : 19,624.12 = 8,398 : x
  2. Step 2: Convert to fraction form
    13,091.12/19,624.12 = 8,398/x
  3. Step 3: Cross multiply
    13,091.12x = 19,624.12 × 8,398
  4. Step 4: Simplify right side
    13,091.12x = 164,803,359.76
  5. Step 5: Solve for x
    x = 164,803,359.76/13,091.12
  6. Step 6: Final answer
    x = 12,588.94

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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.