Home / 20,982.75-28,947.88-14,607.64

Finding the Fourth Proportional to 20,982.75, 28,947.88 and 14,607.64

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Solution

The fourth proportional to 20,982.75, 28,947.88 and 14,607.64 is: 20,152.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.75 : 28,947.88 = 14,607.64 : x
  2. Step 2: Convert to fraction form
    20,982.75/28,947.88 = 14,607.64/x
  3. Step 3: Cross multiply
    20,982.75x = 28,947.88 × 14,607.64
  4. Step 4: Simplify right side
    20,982.75x = 422,860,209.80
  5. Step 5: Solve for x
    x = 422,860,209.80/20,982.75
  6. Step 6: Final answer
    x = 20,152.75

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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.