Home / 13,362.60-18,518.25-13,174.68

Finding the Fourth Proportional to 13,362.60, 18,518.25 and 13,174.68

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Solution

The fourth proportional to 13,362.60, 18,518.25 and 13,174.68 is: 18,257.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.60 : 18,518.25 = 13,174.68 : x
  2. Step 2: Convert to fraction form
    13,362.60/18,518.25 = 13,174.68/x
  3. Step 3: Cross multiply
    13,362.60x = 18,518.25 × 13,174.68
  4. Step 4: Simplify right side
    13,362.60x = 243,972,017.91
  5. Step 5: Solve for x
    x = 243,972,017.91/13,362.60
  6. Step 6: Final answer
    x = 18,257.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.