Home / 14,115.60-21,173.40-12,171.60

Finding the Fourth Proportional to 14,115.60, 21,173.40 and 12,171.60

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Solution

The fourth proportional to 14,115.60, 21,173.40 and 12,171.60 is: 18,257.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.60 : 21,173.40 = 12,171.60 : x
  2. Step 2: Convert to fraction form
    14,115.60/21,173.40 = 12,171.60/x
  3. Step 3: Cross multiply
    14,115.60x = 21,173.40 × 12,171.60
  4. Step 4: Simplify right side
    14,115.60x = 257,714,155.44
  5. Step 5: Solve for x
    x = 257,714,155.44/14,115.60
  6. Step 6: Final answer
    x = 18,257.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.