Home / 12,289.12-18,434.32-3,523.20

Finding the Fourth Proportional to 12,289.12, 18,434.32 and 3,523.20

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Solution

The fourth proportional to 12,289.12, 18,434.32 and 3,523.20 is: 5,284.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.12 : 18,434.32 = 3,523.20 : x
  2. Step 2: Convert to fraction form
    12,289.12/18,434.32 = 3,523.20/x
  3. Step 3: Cross multiply
    12,289.12x = 18,434.32 × 3,523.20
  4. Step 4: Simplify right side
    12,289.12x = 64,947,796.22
  5. Step 5: Solve for x
    x = 64,947,796.22/12,289.12
  6. Step 6: Final answer
    x = 5,284.98

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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.