Home / 20,636.37-28,478.23-11,204.93

Finding the Fourth Proportional to 20,636.37, 28,478.23 and 11,204.93

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Solution

The fourth proportional to 20,636.37, 28,478.23 and 11,204.93 is: 15,462.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.37 : 28,478.23 = 11,204.93 : x
  2. Step 2: Convert to fraction form
    20,636.37/28,478.23 = 11,204.93/x
  3. Step 3: Cross multiply
    20,636.37x = 28,478.23 × 11,204.93
  4. Step 4: Simplify right side
    20,636.37x = 319,096,616.86
  5. Step 5: Solve for x
    x = 319,096,616.86/20,636.37
  6. Step 6: Final answer
    x = 15,462.83

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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.