Home / 13,872.27-19,143.74-7,903.92

Finding the Fourth Proportional to 13,872.27, 19,143.74 and 7,903.92

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Solution

The fourth proportional to 13,872.27, 19,143.74 and 7,903.92 is: 10,907.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.27 : 19,143.74 = 7,903.92 : x
  2. Step 2: Convert to fraction form
    13,872.27/19,143.74 = 7,903.92/x
  3. Step 3: Cross multiply
    13,872.27x = 19,143.74 × 7,903.92
  4. Step 4: Simplify right side
    13,872.27x = 151,310,513.50
  5. Step 5: Solve for x
    x = 151,310,513.50/13,872.27
  6. Step 6: Final answer
    x = 10,907.41

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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.