Home / 12,791.36-19,157.30-12,347.92

Finding the Fourth Proportional to 12,791.36, 19,157.30 and 12,347.92

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Solution

The fourth proportional to 12,791.36, 19,157.30 and 12,347.92 is: 18,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.36 : 19,157.30 = 12,347.92 : x
  2. Step 2: Convert to fraction form
    12,791.36/19,157.30 = 12,347.92/x
  3. Step 3: Cross multiply
    12,791.36x = 19,157.30 × 12,347.92
  4. Step 4: Simplify right side
    12,791.36x = 236,552,807.82
  5. Step 5: Solve for x
    x = 236,552,807.82/12,791.36
  6. Step 6: Final answer
    x = 18,493.17

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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.