Home / 13,245.79-18,257.22-12,895.18

Finding the Fourth Proportional to 13,245.79, 18,257.22 and 12,895.18

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Solution

The fourth proportional to 13,245.79, 18,257.22 and 12,895.18 is: 17,773.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.79 : 18,257.22 = 12,895.18 : x
  2. Step 2: Convert to fraction form
    13,245.79/18,257.22 = 12,895.18/x
  3. Step 3: Cross multiply
    13,245.79x = 18,257.22 × 12,895.18
  4. Step 4: Simplify right side
    13,245.79x = 235,430,138.20
  5. Step 5: Solve for x
    x = 235,430,138.20/13,245.79
  6. Step 6: Final answer
    x = 17,773.96

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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.