Home / 20,300.43-28,015.17-11,348.94

Finding the Fourth Proportional to 20,300.43, 28,015.17 and 11,348.94

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Solution

The fourth proportional to 20,300.43, 28,015.17 and 11,348.94 is: 15,661.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.43 : 28,015.17 = 11,348.94 : x
  2. Step 2: Convert to fraction form
    20,300.43/28,015.17 = 11,348.94/x
  3. Step 3: Cross multiply
    20,300.43x = 28,015.17 × 11,348.94
  4. Step 4: Simplify right side
    20,300.43x = 317,942,483.42
  5. Step 5: Solve for x
    x = 317,942,483.42/20,300.43
  6. Step 6: Final answer
    x = 15,661.86

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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.