Home / 13,940.61-19,265.69-11,418.72

Finding the Fourth Proportional to 13,940.61, 19,265.69 and 11,418.72

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Solution

The fourth proportional to 13,940.61, 19,265.69 and 11,418.72 is: 15,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.61 : 19,265.69 = 11,418.72 : x
  2. Step 2: Convert to fraction form
    13,940.61/19,265.69 = 11,418.72/x
  3. Step 3: Cross multiply
    13,940.61x = 19,265.69 × 11,418.72
  4. Step 4: Simplify right side
    13,940.61x = 219,989,519.72
  5. Step 5: Solve for x
    x = 219,989,519.72/13,940.61
  6. Step 6: Final answer
    x = 15,780.48

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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.