Home / 20,751.75-28,637.43-11,799.81

Finding the Fourth Proportional to 20,751.75, 28,637.43 and 11,799.81

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Solution

The fourth proportional to 20,751.75, 28,637.43 and 11,799.81 is: 16,283.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.75 : 28,637.43 = 11,799.81 : x
  2. Step 2: Convert to fraction form
    20,751.75/28,637.43 = 11,799.81/x
  3. Step 3: Cross multiply
    20,751.75x = 28,637.43 × 11,799.81
  4. Step 4: Simplify right side
    20,751.75x = 337,916,232.89
  5. Step 5: Solve for x
    x = 337,916,232.89/20,751.75
  6. Step 6: Final answer
    x = 16,283.75

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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.