Home / 20,300.68-28,012.77-11,348.56

Finding the Fourth Proportional to 20,300.68, 28,012.77 and 11,348.56

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Solution

The fourth proportional to 20,300.68, 28,012.77 and 11,348.56 is: 15,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.68 : 28,012.77 = 11,348.56 : x
  2. Step 2: Convert to fraction form
    20,300.68/28,012.77 = 11,348.56/x
  3. Step 3: Cross multiply
    20,300.68x = 28,012.77 × 11,348.56
  4. Step 4: Simplify right side
    20,300.68x = 317,904,601.11
  5. Step 5: Solve for x
    x = 317,904,601.11/20,300.68
  6. Step 6: Final answer
    x = 15,659.80

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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.