Home / 13,568.91-18,724.55-7,903.84

Finding the Fourth Proportional to 13,568.91, 18,724.55 and 7,903.84

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Solution

The fourth proportional to 13,568.91, 18,724.55 and 7,903.84 is: 10,906.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.91 : 18,724.55 = 7,903.84 : x
  2. Step 2: Convert to fraction form
    13,568.91/18,724.55 = 7,903.84/x
  3. Step 3: Cross multiply
    13,568.91x = 18,724.55 × 7,903.84
  4. Step 4: Simplify right side
    13,568.91x = 147,995,847.27
  5. Step 5: Solve for x
    x = 147,995,847.27/13,568.91
  6. Step 6: Final answer
    x = 10,906.98

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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.