Home / 13,422.76-18,540.83-10,216.58

Finding the Fourth Proportional to 13,422.76, 18,540.83 and 10,216.58

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Solution

The fourth proportional to 13,422.76, 18,540.83 and 10,216.58 is: 14,112.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.76 : 18,540.83 = 10,216.58 : x
  2. Step 2: Convert to fraction form
    13,422.76/18,540.83 = 10,216.58/x
  3. Step 3: Cross multiply
    13,422.76x = 18,540.83 × 10,216.58
  4. Step 4: Simplify right side
    13,422.76x = 189,423,805.80
  5. Step 5: Solve for x
    x = 189,423,805.80/13,422.76
  6. Step 6: Final answer
    x = 14,112.14

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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.