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Finding the Fourth Proportional to 13,695.67, 20,592.41 and 12,613.11

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Solution

The fourth proportional to 13,695.67, 20,592.41 and 12,613.11 is: 18,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.67 : 20,592.41 = 12,613.11 : x
  2. Step 2: Convert to fraction form
    13,695.67/20,592.41 = 12,613.11/x
  3. Step 3: Cross multiply
    13,695.67x = 20,592.41 × 12,613.11
  4. Step 4: Simplify right side
    13,695.67x = 259,734,263.16
  5. Step 5: Solve for x
    x = 259,734,263.16/13,695.67
  6. Step 6: Final answer
    x = 18,964.70

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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.