Home / 23,130.36-31,919.54-12,519.90

Finding the Fourth Proportional to 23,130.36, 31,919.54 and 12,519.90

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Solution

The fourth proportional to 23,130.36, 31,919.54 and 12,519.90 is: 17,277.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,130.36 : 31,919.54 = 12,519.90 : x
  2. Step 2: Convert to fraction form
    23,130.36/31,919.54 = 12,519.90/x
  3. Step 3: Cross multiply
    23,130.36x = 31,919.54 × 12,519.90
  4. Step 4: Simplify right side
    23,130.36x = 399,629,386.25
  5. Step 5: Solve for x
    x = 399,629,386.25/23,130.36
  6. Step 6: Final answer
    x = 17,277.27

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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.