Home / 12,453.36-18,678.12-5,526.64

Finding the Fourth Proportional to 12,453.36, 18,678.12 and 5,526.64

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Solution

The fourth proportional to 12,453.36, 18,678.12 and 5,526.64 is: 8,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.36 : 18,678.12 = 5,526.64 : x
  2. Step 2: Convert to fraction form
    12,453.36/18,678.12 = 5,526.64/x
  3. Step 3: Cross multiply
    12,453.36x = 18,678.12 × 5,526.64
  4. Step 4: Simplify right side
    12,453.36x = 103,227,245.12
  5. Step 5: Solve for x
    x = 103,227,245.12/12,453.36
  6. Step 6: Final answer
    x = 8,289.11

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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.