Home / 13,283.39-18,311.04-10,921.43

Finding the Fourth Proportional to 13,283.39, 18,311.04 and 10,921.43

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Solution

The fourth proportional to 13,283.39, 18,311.04 and 10,921.43 is: 15,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.39 : 18,311.04 = 10,921.43 : x
  2. Step 2: Convert to fraction form
    13,283.39/18,311.04 = 10,921.43/x
  3. Step 3: Cross multiply
    13,283.39x = 18,311.04 × 10,921.43
  4. Step 4: Simplify right side
    13,283.39x = 199,982,650.03
  5. Step 5: Solve for x
    x = 199,982,650.03/13,283.39
  6. Step 6: Final answer
    x = 15,055.10

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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.