Home / 13,149.81-18,134.72-10,278.92

Finding the Fourth Proportional to 13,149.81, 18,134.72 and 10,278.92

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Solution

The fourth proportional to 13,149.81, 18,134.72 and 10,278.92 is: 14,175.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.81 : 18,134.72 = 10,278.92 : x
  2. Step 2: Convert to fraction form
    13,149.81/18,134.72 = 10,278.92/x
  3. Step 3: Cross multiply
    13,149.81x = 18,134.72 × 10,278.92
  4. Step 4: Simplify right side
    13,149.81x = 186,405,194.03
  5. Step 5: Solve for x
    x = 186,405,194.03/13,149.81
  6. Step 6: Final answer
    x = 14,175.51

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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.