Home / 13,740.94-18,965.33-7,772.86

Finding the Fourth Proportional to 13,740.94, 18,965.33 and 7,772.86

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Solution

The fourth proportional to 13,740.94, 18,965.33 and 7,772.86 is: 10,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.94 : 18,965.33 = 7,772.86 : x
  2. Step 2: Convert to fraction form
    13,740.94/18,965.33 = 7,772.86/x
  3. Step 3: Cross multiply
    13,740.94x = 18,965.33 × 7,772.86
  4. Step 4: Simplify right side
    13,740.94x = 147,414,854.94
  5. Step 5: Solve for x
    x = 147,414,854.94/13,740.94
  6. Step 6: Final answer
    x = 10,728.15

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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.