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Finding the Fourth Proportional to 17,143.70, 25,699.35 and 10,129.10

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Solution

The fourth proportional to 17,143.70, 25,699.35 and 10,129.10 is: 15,184.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,143.70 : 25,699.35 = 10,129.10 : x
  2. Step 2: Convert to fraction form
    17,143.70/25,699.35 = 10,129.10/x
  3. Step 3: Cross multiply
    17,143.70x = 25,699.35 × 10,129.10
  4. Step 4: Simplify right side
    17,143.70x = 260,311,286.09
  5. Step 5: Solve for x
    x = 260,311,286.09/17,143.70
  6. Step 6: Final answer
    x = 15,184.08

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1.5x scale

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.