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Finding the Fourth Proportional to 14,680.40, 20,258.48 and 7,965.68

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Solution

The fourth proportional to 14,680.40, 20,258.48 and 7,965.68 is: 10,992.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,680.40 : 20,258.48 = 7,965.68 : x
  2. Step 2: Convert to fraction form
    14,680.40/20,258.48 = 7,965.68/x
  3. Step 3: Cross multiply
    14,680.40x = 20,258.48 × 7,965.68
  4. Step 4: Simplify right side
    14,680.40x = 161,372,568.97
  5. Step 5: Solve for x
    x = 161,372,568.97/14,680.40
  6. Step 6: Final answer
    x = 10,992.38

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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.