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Finding the Fourth Proportional to 13,597.81, 20,400.80 and 11,247.19

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Solution

The fourth proportional to 13,597.81, 20,400.80 and 11,247.19 is: 16,874.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,597.81 : 20,400.80 = 11,247.19 : x
  2. Step 2: Convert to fraction form
    13,597.81/20,400.80 = 11,247.19/x
  3. Step 3: Cross multiply
    13,597.81x = 20,400.80 × 11,247.19
  4. Step 4: Simplify right side
    13,597.81x = 229,451,566.51
  5. Step 5: Solve for x
    x = 229,451,566.51/13,597.81
  6. Step 6: Final answer
    x = 16,874.16

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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.