Home / 12,453.58-18,679.95-3,688.66

Finding the Fourth Proportional to 12,453.58, 18,679.95 and 3,688.66

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Solution

The fourth proportional to 12,453.58, 18,679.95 and 3,688.66 is: 5,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.58 : 18,679.95 = 3,688.66 : x
  2. Step 2: Convert to fraction form
    12,453.58/18,679.95 = 3,688.66/x
  3. Step 3: Cross multiply
    12,453.58x = 18,679.95 × 3,688.66
  4. Step 4: Simplify right side
    12,453.58x = 68,903,984.37
  5. Step 5: Solve for x
    x = 68,903,984.37/12,453.58
  6. Step 6: Final answer
    x = 5,532.87

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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.