Home / 13,313.37-18,372.51-7,345.47

Finding the Fourth Proportional to 13,313.37, 18,372.51 and 7,345.47

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Solution

The fourth proportional to 13,313.37, 18,372.51 and 7,345.47 is: 10,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.37 : 18,372.51 = 7,345.47 : x
  2. Step 2: Convert to fraction form
    13,313.37/18,372.51 = 7,345.47/x
  3. Step 3: Cross multiply
    13,313.37x = 18,372.51 × 7,345.47
  4. Step 4: Simplify right side
    13,313.37x = 134,954,721.03
  5. Step 5: Solve for x
    x = 134,954,721.03/13,313.37
  6. Step 6: Final answer
    x = 10,136.78

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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.