Home / 13,401.20-18,490.68-7,735.58

Finding the Fourth Proportional to 13,401.20, 18,490.68 and 7,735.58

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Solution

The fourth proportional to 13,401.20, 18,490.68 and 7,735.58 is: 10,673.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.20 : 18,490.68 = 7,735.58 : x
  2. Step 2: Convert to fraction form
    13,401.20/18,490.68 = 7,735.58/x
  3. Step 3: Cross multiply
    13,401.20x = 18,490.68 × 7,735.58
  4. Step 4: Simplify right side
    13,401.20x = 143,036,215.29
  5. Step 5: Solve for x
    x = 143,036,215.29/13,401.20
  6. Step 6: Final answer
    x = 10,673.39

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Double scale
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Similar ratio
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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.