Home / 13,428.79-20,055.36-11,433.14

Finding the Fourth Proportional to 13,428.79, 20,055.36 and 11,433.14

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Solution

The fourth proportional to 13,428.79, 20,055.36 and 11,433.14 is: 17,074.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.79 : 20,055.36 = 11,433.14 : x
  2. Step 2: Convert to fraction form
    13,428.79/20,055.36 = 11,433.14/x
  3. Step 3: Cross multiply
    13,428.79x = 20,055.36 × 11,433.14
  4. Step 4: Simplify right side
    13,428.79x = 229,295,738.63
  5. Step 5: Solve for x
    x = 229,295,738.63/13,428.79
  6. Step 6: Final answer
    x = 17,074.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.