Home / 12,101.40-18,234.45-9,958.20

Finding the Fourth Proportional to 12,101.40, 18,234.45 and 9,958.20

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Solution

The fourth proportional to 12,101.40, 18,234.45 and 9,958.20 is: 15,005.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.40 : 18,234.45 = 9,958.20 : x
  2. Step 2: Convert to fraction form
    12,101.40/18,234.45 = 9,958.20/x
  3. Step 3: Cross multiply
    12,101.40x = 18,234.45 × 9,958.20
  4. Step 4: Simplify right side
    12,101.40x = 181,582,299.99
  5. Step 5: Solve for x
    x = 181,582,299.99/12,101.40
  6. Step 6: Final answer
    x = 15,005.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.