Home / 20,671.92-28,522.26-13,115.52

Finding the Fourth Proportional to 20,671.92, 28,522.26 and 13,115.52

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Solution

The fourth proportional to 20,671.92, 28,522.26 and 13,115.52 is: 18,096.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.92 : 28,522.26 = 13,115.52 : x
  2. Step 2: Convert to fraction form
    20,671.92/28,522.26 = 13,115.52/x
  3. Step 3: Cross multiply
    20,671.92x = 28,522.26 × 13,115.52
  4. Step 4: Simplify right side
    20,671.92x = 374,084,271.48
  5. Step 5: Solve for x
    x = 374,084,271.48/20,671.92
  6. Step 6: Final answer
    x = 18,096.25

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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.