Home / 13,171.91-18,176.58-7,506.90

Finding the Fourth Proportional to 13,171.91, 18,176.58 and 7,506.90

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Solution

The fourth proportional to 13,171.91, 18,176.58 and 7,506.90 is: 10,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.91 : 18,176.58 = 7,506.90 : x
  2. Step 2: Convert to fraction form
    13,171.91/18,176.58 = 7,506.90/x
  3. Step 3: Cross multiply
    13,171.91x = 18,176.58 × 7,506.90
  4. Step 4: Simplify right side
    13,171.91x = 136,449,768.40
  5. Step 5: Solve for x
    x = 136,449,768.40/13,171.91
  6. Step 6: Final answer
    x = 10,359.15

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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.