Home / 19,131.49-26,383.80-11,959.12

Finding the Fourth Proportional to 19,131.49, 26,383.80 and 11,959.12

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Solution

The fourth proportional to 19,131.49, 26,383.80 and 11,959.12 is: 16,492.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.49 : 26,383.80 = 11,959.12 : x
  2. Step 2: Convert to fraction form
    19,131.49/26,383.80 = 11,959.12/x
  3. Step 3: Cross multiply
    19,131.49x = 26,383.80 × 11,959.12
  4. Step 4: Simplify right side
    19,131.49x = 315,527,030.26
  5. Step 5: Solve for x
    x = 315,527,030.26/19,131.49
  6. Step 6: Final answer
    x = 16,492.55

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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.