Home / 13,400.30-18,491.20-7,431.95

Finding the Fourth Proportional to 13,400.30, 18,491.20 and 7,431.95

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Solution

The fourth proportional to 13,400.30, 18,491.20 and 7,431.95 is: 10,255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.30 : 18,491.20 = 7,431.95 : x
  2. Step 2: Convert to fraction form
    13,400.30/18,491.20 = 7,431.95/x
  3. Step 3: Cross multiply
    13,400.30x = 18,491.20 × 7,431.95
  4. Step 4: Simplify right side
    13,400.30x = 137,425,544.22
  5. Step 5: Solve for x
    x = 137,425,544.22/13,400.30
  6. Step 6: Final answer
    x = 10,255.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.