Home / 13,972.72-19,284.24-12,791.68

Finding the Fourth Proportional to 13,972.72, 19,284.24 and 12,791.68

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Solution

The fourth proportional to 13,972.72, 19,284.24 and 12,791.68 is: 17,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.72 : 19,284.24 = 12,791.68 : x
  2. Step 2: Convert to fraction form
    13,972.72/19,284.24 = 12,791.68/x
  3. Step 3: Cross multiply
    13,972.72x = 19,284.24 × 12,791.68
  4. Step 4: Simplify right side
    13,972.72x = 246,677,827.12
  5. Step 5: Solve for x
    x = 246,677,827.12/13,972.72
  6. Step 6: Final answer
    x = 17,654.25

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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.