Home / 18,187.40-27,281.10-11,529.20

Finding the Fourth Proportional to 18,187.40, 27,281.10 and 11,529.20

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Solution

The fourth proportional to 18,187.40, 27,281.10 and 11,529.20 is: 17,293.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.40 : 27,281.10 = 11,529.20 : x
  2. Step 2: Convert to fraction form
    18,187.40/27,281.10 = 11,529.20/x
  3. Step 3: Cross multiply
    18,187.40x = 27,281.10 × 11,529.20
  4. Step 4: Simplify right side
    18,187.40x = 314,529,258.12
  5. Step 5: Solve for x
    x = 314,529,258.12/18,187.40
  6. Step 6: Final answer
    x = 17,293.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.