Home / 12,225.78-18,340.83-5,305.14

Finding the Fourth Proportional to 12,225.78, 18,340.83 and 5,305.14

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Solution

The fourth proportional to 12,225.78, 18,340.83 and 5,305.14 is: 7,958.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.78 : 18,340.83 = 5,305.14 : x
  2. Step 2: Convert to fraction form
    12,225.78/18,340.83 = 5,305.14/x
  3. Step 3: Cross multiply
    12,225.78x = 18,340.83 × 5,305.14
  4. Step 4: Simplify right side
    12,225.78x = 97,300,670.87
  5. Step 5: Solve for x
    x = 97,300,670.87/12,225.78
  6. Step 6: Final answer
    x = 7,958.65

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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.