Home / 20,636.46-28,478.38-11,204.82

Finding the Fourth Proportional to 20,636.46, 28,478.38 and 11,204.82

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Solution

The fourth proportional to 20,636.46, 28,478.38 and 11,204.82 is: 15,462.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.46 : 28,478.38 = 11,204.82 : x
  2. Step 2: Convert to fraction form
    20,636.46/28,478.38 = 11,204.82/x
  3. Step 3: Cross multiply
    20,636.46x = 28,478.38 × 11,204.82
  4. Step 4: Simplify right side
    20,636.46x = 319,095,121.79
  5. Step 5: Solve for x
    x = 319,095,121.79/20,636.46
  6. Step 6: Final answer
    x = 15,462.69

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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.