Home / 20,584.44-28,406.61-11,153.01

Finding the Fourth Proportional to 20,584.44, 28,406.61 and 11,153.01

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Solution

The fourth proportional to 20,584.44, 28,406.61 and 11,153.01 is: 15,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.44 : 28,406.61 = 11,153.01 : x
  2. Step 2: Convert to fraction form
    20,584.44/28,406.61 = 11,153.01/x
  3. Step 3: Cross multiply
    20,584.44x = 28,406.61 × 11,153.01
  4. Step 4: Simplify right side
    20,584.44x = 316,819,205.40
  5. Step 5: Solve for x
    x = 316,819,205.40/20,584.44
  6. Step 6: Final answer
    x = 15,391.20

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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.