Home / 12,289.76-18,434.64-4,496.78

Finding the Fourth Proportional to 12,289.76, 18,434.64 and 4,496.78

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Solution

The fourth proportional to 12,289.76, 18,434.64 and 4,496.78 is: 6,745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.76 : 18,434.64 = 4,496.78 : x
  2. Step 2: Convert to fraction form
    12,289.76/18,434.64 = 4,496.78/x
  3. Step 3: Cross multiply
    12,289.76x = 18,434.64 × 4,496.78
  4. Step 4: Simplify right side
    12,289.76x = 82,896,520.46
  5. Step 5: Solve for x
    x = 82,896,520.46/12,289.76
  6. Step 6: Final answer
    x = 6,745.17

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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.