Home / 13,201.20-18,217.69-7,151.50

Finding the Fourth Proportional to 13,201.20, 18,217.69 and 7,151.50

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Solution

The fourth proportional to 13,201.20, 18,217.69 and 7,151.50 is: 9,869.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.20 : 18,217.69 = 7,151.50 : x
  2. Step 2: Convert to fraction form
    13,201.20/18,217.69 = 7,151.50/x
  3. Step 3: Cross multiply
    13,201.20x = 18,217.69 × 7,151.50
  4. Step 4: Simplify right side
    13,201.20x = 130,283,855.16
  5. Step 5: Solve for x
    x = 130,283,855.16/13,201.20
  6. Step 6: Final answer
    x = 9,869.09

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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.