Home / 18,815.39-25,965.53-10,318.28

Finding the Fourth Proportional to 18,815.39, 25,965.53 and 10,318.28

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Solution

The fourth proportional to 18,815.39, 25,965.53 and 10,318.28 is: 14,239.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.39 : 25,965.53 = 10,318.28 : x
  2. Step 2: Convert to fraction form
    18,815.39/25,965.53 = 10,318.28/x
  3. Step 3: Cross multiply
    18,815.39x = 25,965.53 × 10,318.28
  4. Step 4: Simplify right side
    18,815.39x = 267,919,557.30
  5. Step 5: Solve for x
    x = 267,919,557.30/18,815.39
  6. Step 6: Final answer
    x = 14,239.39

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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.