Home / 13,409.76-18,523.20-11,178.96

Finding the Fourth Proportional to 13,409.76, 18,523.20 and 11,178.96

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Solution

The fourth proportional to 13,409.76, 18,523.20 and 11,178.96 is: 15,441.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.76 : 18,523.20 = 11,178.96 : x
  2. Step 2: Convert to fraction form
    13,409.76/18,523.20 = 11,178.96/x
  3. Step 3: Cross multiply
    13,409.76x = 18,523.20 × 11,178.96
  4. Step 4: Simplify right side
    13,409.76x = 207,070,111.87
  5. Step 5: Solve for x
    x = 207,070,111.87/13,409.76
  6. Step 6: Final answer
    x = 15,441.75

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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.