Home / 20,348.15-28,075.55-11,845.10

Finding the Fourth Proportional to 20,348.15, 28,075.55 and 11,845.10

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Solution

The fourth proportional to 20,348.15, 28,075.55 and 11,845.10 is: 16,343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.15 : 28,075.55 = 11,845.10 : x
  2. Step 2: Convert to fraction form
    20,348.15/28,075.55 = 11,845.10/x
  3. Step 3: Cross multiply
    20,348.15x = 28,075.55 × 11,845.10
  4. Step 4: Simplify right side
    20,348.15x = 332,557,708.27
  5. Step 5: Solve for x
    x = 332,557,708.27/20,348.15
  6. Step 6: Final answer
    x = 16,343.39

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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.