Home / 18,749.74-28,123.90-4,709.86

Finding the Fourth Proportional to 18,749.74, 28,123.90 and 4,709.86

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Solution

The fourth proportional to 18,749.74, 28,123.90 and 4,709.86 is: 7,064.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.74 : 28,123.90 = 4,709.86 : x
  2. Step 2: Convert to fraction form
    18,749.74/28,123.90 = 4,709.86/x
  3. Step 3: Cross multiply
    18,749.74x = 28,123.90 × 4,709.86
  4. Step 4: Simplify right side
    18,749.74x = 132,459,631.65
  5. Step 5: Solve for x
    x = 132,459,631.65/18,749.74
  6. Step 6: Final answer
    x = 7,064.61

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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.