Home / 13,201.69-18,218.57-9,011.29

Finding the Fourth Proportional to 13,201.69, 18,218.57 and 9,011.29

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Solution

The fourth proportional to 13,201.69, 18,218.57 and 9,011.29 is: 12,435.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.69 : 18,218.57 = 9,011.29 : x
  2. Step 2: Convert to fraction form
    13,201.69/18,218.57 = 9,011.29/x
  3. Step 3: Cross multiply
    13,201.69x = 18,218.57 × 9,011.29
  4. Step 4: Simplify right side
    13,201.69x = 164,172,817.66
  5. Step 5: Solve for x
    x = 164,172,817.66/13,201.69
  6. Step 6: Final answer
    x = 12,435.74

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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.