Home / 13,685.28-20,524.32-4,918.56

Finding the Fourth Proportional to 13,685.28, 20,524.32 and 4,918.56

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Solution

The fourth proportional to 13,685.28, 20,524.32 and 4,918.56 is: 7,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.28 : 20,524.32 = 4,918.56 : x
  2. Step 2: Convert to fraction form
    13,685.28/20,524.32 = 4,918.56/x
  3. Step 3: Cross multiply
    13,685.28x = 20,524.32 × 4,918.56
  4. Step 4: Simplify right side
    13,685.28x = 100,950,099.38
  5. Step 5: Solve for x
    x = 100,950,099.38/13,685.28
  6. Step 6: Final answer
    x = 7,376.55

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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.