Home / 18,768.32-28,151.04-7,672.04

Finding the Fourth Proportional to 18,768.32, 28,151.04 and 7,672.04

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Solution

The fourth proportional to 18,768.32, 28,151.04 and 7,672.04 is: 11,507.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.32 : 28,151.04 = 7,672.04 : x
  2. Step 2: Convert to fraction form
    18,768.32/28,151.04 = 7,672.04/x
  3. Step 3: Cross multiply
    18,768.32x = 28,151.04 × 7,672.04
  4. Step 4: Simplify right side
    18,768.32x = 215,975,904.92
  5. Step 5: Solve for x
    x = 215,975,904.92/18,768.32
  6. Step 6: Final answer
    x = 11,507.47

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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.