Home / 18,718.18-25,830.03-11,173.03

Finding the Fourth Proportional to 18,718.18, 25,830.03 and 11,173.03

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Solution

The fourth proportional to 18,718.18, 25,830.03 and 11,173.03 is: 15,418.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.18 : 25,830.03 = 11,173.03 : x
  2. Step 2: Convert to fraction form
    18,718.18/25,830.03 = 11,173.03/x
  3. Step 3: Cross multiply
    18,718.18x = 25,830.03 × 11,173.03
  4. Step 4: Simplify right side
    18,718.18x = 288,599,700.09
  5. Step 5: Solve for x
    x = 288,599,700.09/18,718.18
  6. Step 6: Final answer
    x = 15,418.15

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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.