Home / 13,150.04-18,147.13-7,181.71

Finding the Fourth Proportional to 13,150.04, 18,147.13 and 7,181.71

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Solution

The fourth proportional to 13,150.04, 18,147.13 and 7,181.71 is: 9,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.04 : 18,147.13 = 7,181.71 : x
  2. Step 2: Convert to fraction form
    13,150.04/18,147.13 = 7,181.71/x
  3. Step 3: Cross multiply
    13,150.04x = 18,147.13 × 7,181.71
  4. Step 4: Simplify right side
    13,150.04x = 130,327,389.08
  5. Step 5: Solve for x
    x = 130,327,389.08/13,150.04
  6. Step 6: Final answer
    x = 9,910.80

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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.