Home / 13,365.54-18,441.81-9,119.70

Finding the Fourth Proportional to 13,365.54, 18,441.81 and 9,119.70

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Solution

The fourth proportional to 13,365.54, 18,441.81 and 9,119.70 is: 12,583.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.54 : 18,441.81 = 9,119.70 : x
  2. Step 2: Convert to fraction form
    13,365.54/18,441.81 = 9,119.70/x
  3. Step 3: Cross multiply
    13,365.54x = 18,441.81 × 9,119.70
  4. Step 4: Simplify right side
    13,365.54x = 168,183,774.66
  5. Step 5: Solve for x
    x = 168,183,774.66/13,365.54
  6. Step 6: Final answer
    x = 12,583.39

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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.