Home / 13,631.97-18,810.68-7,581.23

Finding the Fourth Proportional to 13,631.97, 18,810.68 and 7,581.23

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Solution

The fourth proportional to 13,631.97, 18,810.68 and 7,581.23 is: 10,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.97 : 18,810.68 = 7,581.23 : x
  2. Step 2: Convert to fraction form
    13,631.97/18,810.68 = 7,581.23/x
  3. Step 3: Cross multiply
    13,631.97x = 18,810.68 × 7,581.23
  4. Step 4: Simplify right side
    13,631.97x = 142,608,091.54
  5. Step 5: Solve for x
    x = 142,608,091.54/13,631.97
  6. Step 6: Final answer
    x = 10,461.30

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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.