Home / 13,588.69-18,761.61-8,491.99

Finding the Fourth Proportional to 13,588.69, 18,761.61 and 8,491.99

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Solution

The fourth proportional to 13,588.69, 18,761.61 and 8,491.99 is: 11,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.69 : 18,761.61 = 8,491.99 : x
  2. Step 2: Convert to fraction form
    13,588.69/18,761.61 = 8,491.99/x
  3. Step 3: Cross multiply
    13,588.69x = 18,761.61 × 8,491.99
  4. Step 4: Simplify right side
    13,588.69x = 159,323,404.50
  5. Step 5: Solve for x
    x = 159,323,404.50/13,588.69
  6. Step 6: Final answer
    x = 11,724.71

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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.