Home / 12,455.70-18,683.55-12,346.35

Finding the Fourth Proportional to 12,455.70, 18,683.55 and 12,346.35

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Solution

The fourth proportional to 12,455.70, 18,683.55 and 12,346.35 is: 18,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.70 : 18,683.55 = 12,346.35 : x
  2. Step 2: Convert to fraction form
    12,455.70/18,683.55 = 12,346.35/x
  3. Step 3: Cross multiply
    12,455.70x = 18,683.55 × 12,346.35
  4. Step 4: Simplify right side
    12,455.70x = 230,673,647.54
  5. Step 5: Solve for x
    x = 230,673,647.54/12,455.70
  6. Step 6: Final answer
    x = 18,519.53

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.