Home / 14,728.20-20,322.66-8,759.76

Finding the Fourth Proportional to 14,728.20, 20,322.66 and 8,759.76

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Solution

The fourth proportional to 14,728.20, 20,322.66 and 8,759.76 is: 12,087.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,728.20 : 20,322.66 = 8,759.76 : x
  2. Step 2: Convert to fraction form
    14,728.20/20,322.66 = 8,759.76/x
  3. Step 3: Cross multiply
    14,728.20x = 20,322.66 × 8,759.76
  4. Step 4: Simplify right side
    14,728.20x = 178,021,624.16
  5. Step 5: Solve for x
    x = 178,021,624.16/14,728.20
  6. Step 6: Final answer
    x = 12,087.13

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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.