Home / 13,925.72-20,874-10,222.40

Finding the Fourth Proportional to 13,925.72, 20,874 and 10,222.40

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Solution

The fourth proportional to 13,925.72, 20,874 and 10,222.40 is: 15,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.72 : 20,874 = 10,222.40 : x
  2. Step 2: Convert to fraction form
    13,925.72/20,874 = 10,222.40/x
  3. Step 3: Cross multiply
    13,925.72x = 20,874 × 10,222.40
  4. Step 4: Simplify right side
    13,925.72x = 213,382,377.60
  5. Step 5: Solve for x
    x = 213,382,377.60/13,925.72
  6. Step 6: Final answer
    x = 15,322.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.