Home / 13,408.74-18,491.09-8,932.68

Finding the Fourth Proportional to 13,408.74, 18,491.09 and 8,932.68

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Solution

The fourth proportional to 13,408.74, 18,491.09 and 8,932.68 is: 12,318.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.74 : 18,491.09 = 8,932.68 : x
  2. Step 2: Convert to fraction form
    13,408.74/18,491.09 = 8,932.68/x
  3. Step 3: Cross multiply
    13,408.74x = 18,491.09 × 8,932.68
  4. Step 4: Simplify right side
    13,408.74x = 165,174,945.16
  5. Step 5: Solve for x
    x = 165,174,945.16/13,408.74
  6. Step 6: Final answer
    x = 12,318.45

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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.