Home / 13,313.58-18,372.90-7,345.45

Finding the Fourth Proportional to 13,313.58, 18,372.90 and 7,345.45

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Solution

The fourth proportional to 13,313.58, 18,372.90 and 7,345.45 is: 10,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.58 : 18,372.90 = 7,345.45 : x
  2. Step 2: Convert to fraction form
    13,313.58/18,372.90 = 7,345.45/x
  3. Step 3: Cross multiply
    13,313.58x = 18,372.90 × 7,345.45
  4. Step 4: Simplify right side
    13,313.58x = 134,957,218.31
  5. Step 5: Solve for x
    x = 134,957,218.31/13,313.58
  6. Step 6: Final answer
    x = 10,136.81

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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.