Home / 20,852.79-28,776.67-11,292.69

Finding the Fourth Proportional to 20,852.79, 28,776.67 and 11,292.69

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Solution

The fourth proportional to 20,852.79, 28,776.67 and 11,292.69 is: 15,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.79 : 28,776.67 = 11,292.69 : x
  2. Step 2: Convert to fraction form
    20,852.79/28,776.67 = 11,292.69/x
  3. Step 3: Cross multiply
    20,852.79x = 28,776.67 × 11,292.69
  4. Step 4: Simplify right side
    20,852.79x = 324,966,013.54
  5. Step 5: Solve for x
    x = 324,966,013.54/20,852.79
  6. Step 6: Final answer
    x = 15,583.81

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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.