Home / 13,113.20-18,054.42-12,218.96

Finding the Fourth Proportional to 13,113.20, 18,054.42 and 12,218.96

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Solution

The fourth proportional to 13,113.20, 18,054.42 and 12,218.96 is: 16,823.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.20 : 18,054.42 = 12,218.96 : x
  2. Step 2: Convert to fraction form
    13,113.20/18,054.42 = 12,218.96/x
  3. Step 3: Cross multiply
    13,113.20x = 18,054.42 × 12,218.96
  4. Step 4: Simplify right side
    13,113.20x = 220,606,235.80
  5. Step 5: Solve for x
    x = 220,606,235.80/13,113.20
  6. Step 6: Final answer
    x = 16,823.22

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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.