Home / 20,584.34-28,406.42-11,152.91

Finding the Fourth Proportional to 20,584.34, 28,406.42 and 11,152.91

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Solution

The fourth proportional to 20,584.34, 28,406.42 and 11,152.91 is: 15,391.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.34 : 28,406.42 = 11,152.91 : x
  2. Step 2: Convert to fraction form
    20,584.34/28,406.42 = 11,152.91/x
  3. Step 3: Cross multiply
    20,584.34x = 28,406.42 × 11,152.91
  4. Step 4: Simplify right side
    20,584.34x = 316,814,131.53
  5. Step 5: Solve for x
    x = 316,814,131.53/20,584.34
  6. Step 6: Final answer
    x = 15,391.03

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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.