Home / 20,636.80-30,966.56-11,276.48

Finding the Fourth Proportional to 20,636.80, 30,966.56 and 11,276.48

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Solution

The fourth proportional to 20,636.80, 30,966.56 and 11,276.48 is: 16,920.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.80 : 30,966.56 = 11,276.48 : x
  2. Step 2: Convert to fraction form
    20,636.80/30,966.56 = 11,276.48/x
  3. Step 3: Cross multiply
    20,636.80x = 30,966.56 × 11,276.48
  4. Step 4: Simplify right side
    20,636.80x = 349,193,794.51
  5. Step 5: Solve for x
    x = 349,193,794.51/20,636.80
  6. Step 6: Final answer
    x = 16,920.93

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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.