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Finding the Fourth Proportional to 18,378.47, 27,604.16 and 15,744.96

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Solution

The fourth proportional to 18,378.47, 27,604.16 and 15,744.96 is: 23,648.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.47 : 27,604.16 = 15,744.96 : x
  2. Step 2: Convert to fraction form
    18,378.47/27,604.16 = 15,744.96/x
  3. Step 3: Cross multiply
    18,378.47x = 27,604.16 × 15,744.96
  4. Step 4: Simplify right side
    18,378.47x = 434,626,395.03
  5. Step 5: Solve for x
    x = 434,626,395.03/18,378.47
  6. Step 6: Final answer
    x = 23,648.67

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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.