Home / 18,231.12-25,157.52-11,156.58

Finding the Fourth Proportional to 18,231.12, 25,157.52 and 11,156.58

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Solution

The fourth proportional to 18,231.12, 25,157.52 and 11,156.58 is: 15,395.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.12 : 25,157.52 = 11,156.58 : x
  2. Step 2: Convert to fraction form
    18,231.12/25,157.52 = 11,156.58/x
  3. Step 3: Cross multiply
    18,231.12x = 25,157.52 × 11,156.58
  4. Step 4: Simplify right side
    18,231.12x = 280,671,884.48
  5. Step 5: Solve for x
    x = 280,671,884.48/18,231.12
  6. Step 6: Final answer
    x = 15,395.21

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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.