Home / 18,103.10-25,016.58-13,619.07

Finding the Fourth Proportional to 18,103.10, 25,016.58 and 13,619.07

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Solution

The fourth proportional to 18,103.10, 25,016.58 and 13,619.07 is: 18,820.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.10 : 25,016.58 = 13,619.07 : x
  2. Step 2: Convert to fraction form
    18,103.10/25,016.58 = 13,619.07/x
  3. Step 3: Cross multiply
    18,103.10x = 25,016.58 × 13,619.07
  4. Step 4: Simplify right side
    18,103.10x = 340,702,554.18
  5. Step 5: Solve for x
    x = 340,702,554.18/18,103.10
  6. Step 6: Final answer
    x = 18,820.13

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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.