Home / 13,371.80-18,434.94-11,272.28

Finding the Fourth Proportional to 13,371.80, 18,434.94 and 11,272.28

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Solution

The fourth proportional to 13,371.80, 18,434.94 and 11,272.28 is: 15,540.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.80 : 18,434.94 = 11,272.28 : x
  2. Step 2: Convert to fraction form
    13,371.80/18,434.94 = 11,272.28/x
  3. Step 3: Cross multiply
    13,371.80x = 18,434.94 × 11,272.28
  4. Step 4: Simplify right side
    13,371.80x = 207,803,805.46
  5. Step 5: Solve for x
    x = 207,803,805.46/13,371.80
  6. Step 6: Final answer
    x = 15,540.45

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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.