Home / 13,408.38-18,497.13-9,817.68

Finding the Fourth Proportional to 13,408.38, 18,497.13 and 9,817.68

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Solution

The fourth proportional to 13,408.38, 18,497.13 and 9,817.68 is: 13,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.38 : 18,497.13 = 9,817.68 : x
  2. Step 2: Convert to fraction form
    13,408.38/18,497.13 = 9,817.68/x
  3. Step 3: Cross multiply
    13,408.38x = 18,497.13 × 9,817.68
  4. Step 4: Simplify right side
    13,408.38x = 181,598,903.26
  5. Step 5: Solve for x
    x = 181,598,903.26/13,408.38
  6. Step 6: Final answer
    x = 13,543.69

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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.