Home / 18,778.02-25,911.90-11,222.86

Finding the Fourth Proportional to 18,778.02, 25,911.90 and 11,222.86

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Solution

The fourth proportional to 18,778.02, 25,911.90 and 11,222.86 is: 15,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.02 : 25,911.90 = 11,222.86 : x
  2. Step 2: Convert to fraction form
    18,778.02/25,911.90 = 11,222.86/x
  3. Step 3: Cross multiply
    18,778.02x = 25,911.90 × 11,222.86
  4. Step 4: Simplify right side
    18,778.02x = 290,805,626.03
  5. Step 5: Solve for x
    x = 290,805,626.03/18,778.02
  6. Step 6: Final answer
    x = 15,486.49

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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.