Home / 20,349.23-28,078.65-11,396.70

Finding the Fourth Proportional to 20,349.23, 28,078.65 and 11,396.70

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Solution

The fourth proportional to 20,349.23, 28,078.65 and 11,396.70 is: 15,725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.23 : 28,078.65 = 11,396.70 : x
  2. Step 2: Convert to fraction form
    20,349.23/28,078.65 = 11,396.70/x
  3. Step 3: Cross multiply
    20,349.23x = 28,078.65 × 11,396.70
  4. Step 4: Simplify right side
    20,349.23x = 320,003,950.46
  5. Step 5: Solve for x
    x = 320,003,950.46/20,349.23
  6. Step 6: Final answer
    x = 15,725.61

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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.