Home / 13,313.57-18,372.42-7,345.80

Finding the Fourth Proportional to 13,313.57, 18,372.42 and 7,345.80

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Solution

The fourth proportional to 13,313.57, 18,372.42 and 7,345.80 is: 10,137.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.57 : 18,372.42 = 7,345.80 : x
  2. Step 2: Convert to fraction form
    13,313.57/18,372.42 = 7,345.80/x
  3. Step 3: Cross multiply
    13,313.57x = 18,372.42 × 7,345.80
  4. Step 4: Simplify right side
    13,313.57x = 134,960,122.84
  5. Step 5: Solve for x
    x = 134,960,122.84/13,313.57
  6. Step 6: Final answer
    x = 10,137.04

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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.