Home / 18,216.66-25,131.69-11,130.78

Finding the Fourth Proportional to 18,216.66, 25,131.69 and 11,130.78

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Solution

The fourth proportional to 18,216.66, 25,131.69 and 11,130.78 is: 15,356.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.66 : 25,131.69 = 11,130.78 : x
  2. Step 2: Convert to fraction form
    18,216.66/25,131.69 = 11,130.78/x
  3. Step 3: Cross multiply
    18,216.66x = 25,131.69 × 11,130.78
  4. Step 4: Simplify right side
    18,216.66x = 279,735,312.42
  5. Step 5: Solve for x
    x = 279,735,312.42/18,216.66
  6. Step 6: Final answer
    x = 15,356.02

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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.