Home / 13,181.13-18,190.41-7,516.71

Finding the Fourth Proportional to 13,181.13, 18,190.41 and 7,516.71

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Solution

The fourth proportional to 13,181.13, 18,190.41 and 7,516.71 is: 10,373.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.13 : 18,190.41 = 7,516.71 : x
  2. Step 2: Convert to fraction form
    13,181.13/18,190.41 = 7,516.71/x
  3. Step 3: Cross multiply
    13,181.13x = 18,190.41 × 7,516.71
  4. Step 4: Simplify right side
    13,181.13x = 136,732,036.75
  5. Step 5: Solve for x
    x = 136,732,036.75/13,181.13
  6. Step 6: Final answer
    x = 10,373.32

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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.