Home / 14,179.20-21,268.80-12,210.90

Finding the Fourth Proportional to 14,179.20, 21,268.80 and 12,210.90

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Solution

The fourth proportional to 14,179.20, 21,268.80 and 12,210.90 is: 18,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.20 : 21,268.80 = 12,210.90 : x
  2. Step 2: Convert to fraction form
    14,179.20/21,268.80 = 12,210.90/x
  3. Step 3: Cross multiply
    14,179.20x = 21,268.80 × 12,210.90
  4. Step 4: Simplify right side
    14,179.20x = 259,711,189.92
  5. Step 5: Solve for x
    x = 259,711,189.92/14,179.20
  6. Step 6: Final answer
    x = 18,316.35

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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.