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Finding the Fourth Proportional to 17,145.71, 25,718.37 and 13,011.11

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Solution

The fourth proportional to 17,145.71, 25,718.37 and 13,011.11 is: 19,516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,145.71 : 25,718.37 = 13,011.11 : x
  2. Step 2: Convert to fraction form
    17,145.71/25,718.37 = 13,011.11/x
  3. Step 3: Cross multiply
    17,145.71x = 25,718.37 × 13,011.11
  4. Step 4: Simplify right side
    17,145.71x = 334,624,541.09
  5. Step 5: Solve for x
    x = 334,624,541.09/17,145.71
  6. Step 6: Final answer
    x = 19,516.52

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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.