Home / 14,143.38-19,513.47-8,172.87

Finding the Fourth Proportional to 14,143.38, 19,513.47 and 8,172.87

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Solution

The fourth proportional to 14,143.38, 19,513.47 and 8,172.87 is: 11,276.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.38 : 19,513.47 = 8,172.87 : x
  2. Step 2: Convert to fraction form
    14,143.38/19,513.47 = 8,172.87/x
  3. Step 3: Cross multiply
    14,143.38x = 19,513.47 × 8,172.87
  4. Step 4: Simplify right side
    14,143.38x = 159,481,053.56
  5. Step 5: Solve for x
    x = 159,481,053.56/14,143.38
  6. Step 6: Final answer
    x = 11,276.02

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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.