Home / 18,725.20-28,079.96-7,624.34

Finding the Fourth Proportional to 18,725.20, 28,079.96 and 7,624.34

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Solution

The fourth proportional to 18,725.20, 28,079.96 and 7,624.34 is: 11,433.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.20 : 28,079.96 = 7,624.34 : x
  2. Step 2: Convert to fraction form
    18,725.20/28,079.96 = 7,624.34/x
  3. Step 3: Cross multiply
    18,725.20x = 28,079.96 × 7,624.34
  4. Step 4: Simplify right side
    18,725.20x = 214,091,162.23
  5. Step 5: Solve for x
    x = 214,091,162.23/18,725.20
  6. Step 6: Final answer
    x = 11,433.32

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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.