Home / 13,422.11-18,522.47-7,453.76

Finding the Fourth Proportional to 13,422.11, 18,522.47 and 7,453.76

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Solution

The fourth proportional to 13,422.11, 18,522.47 and 7,453.76 is: 10,286.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.11 : 18,522.47 = 7,453.76 : x
  2. Step 2: Convert to fraction form
    13,422.11/18,522.47 = 7,453.76/x
  3. Step 3: Cross multiply
    13,422.11x = 18,522.47 × 7,453.76
  4. Step 4: Simplify right side
    13,422.11x = 138,061,972.01
  5. Step 5: Solve for x
    x = 138,061,972.01/13,422.11
  6. Step 6: Final answer
    x = 10,286.16

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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.