Home / 12,474.21-17,190.64-8,931.27

Finding the Fourth Proportional to 12,474.21, 17,190.64 and 8,931.27

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Solution

The fourth proportional to 12,474.21, 17,190.64 and 8,931.27 is: 12,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.21 : 17,190.64 = 8,931.27 : x
  2. Step 2: Convert to fraction form
    12,474.21/17,190.64 = 8,931.27/x
  3. Step 3: Cross multiply
    12,474.21x = 17,190.64 × 8,931.27
  4. Step 4: Simplify right side
    12,474.21x = 153,534,247.31
  5. Step 5: Solve for x
    x = 153,534,247.31/12,474.21
  6. Step 6: Final answer
    x = 12,308.13

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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.