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Finding the Fourth Proportional to 18,143.39, 25,039.08 and 10,186.16

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Solution

The fourth proportional to 18,143.39, 25,039.08 and 10,186.16 is: 14,057.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.39 : 25,039.08 = 10,186.16 : x
  2. Step 2: Convert to fraction form
    18,143.39/25,039.08 = 10,186.16/x
  3. Step 3: Cross multiply
    18,143.39x = 25,039.08 × 10,186.16
  4. Step 4: Simplify right side
    18,143.39x = 255,052,075.13
  5. Step 5: Solve for x
    x = 255,052,075.13/18,143.39
  6. Step 6: Final answer
    x = 14,057.58

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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.