Home / 18,378.12-25,334.46-11,299.08

Finding the Fourth Proportional to 18,378.12, 25,334.46 and 11,299.08

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Solution

The fourth proportional to 18,378.12, 25,334.46 and 11,299.08 is: 15,575.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.12 : 25,334.46 = 11,299.08 : x
  2. Step 2: Convert to fraction form
    18,378.12/25,334.46 = 11,299.08/x
  3. Step 3: Cross multiply
    18,378.12x = 25,334.46 × 11,299.08
  4. Step 4: Simplify right side
    18,378.12x = 286,256,090.30
  5. Step 5: Solve for x
    x = 286,256,090.30/18,378.12
  6. Step 6: Final answer
    x = 15,575.92

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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.