Home / 13,376.39-18,459.77-7,408.58

Finding the Fourth Proportional to 13,376.39, 18,459.77 and 7,408.58

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Solution

The fourth proportional to 13,376.39, 18,459.77 and 7,408.58 is: 10,224.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.39 : 18,459.77 = 7,408.58 : x
  2. Step 2: Convert to fraction form
    13,376.39/18,459.77 = 7,408.58/x
  3. Step 3: Cross multiply
    13,376.39x = 18,459.77 × 7,408.58
  4. Step 4: Simplify right side
    13,376.39x = 136,760,553.48
  5. Step 5: Solve for x
    x = 136,760,553.48/13,376.39
  6. Step 6: Final answer
    x = 10,224.03

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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.