Home / 13,313.48-18,373.64-7,345.68

Finding the Fourth Proportional to 13,313.48, 18,373.64 and 7,345.68

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Solution

The fourth proportional to 13,313.48, 18,373.64 and 7,345.68 is: 10,137.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.48 : 18,373.64 = 7,345.68 : x
  2. Step 2: Convert to fraction form
    13,313.48/18,373.64 = 7,345.68/x
  3. Step 3: Cross multiply
    13,313.48x = 18,373.64 × 7,345.68
  4. Step 4: Simplify right side
    13,313.48x = 134,966,879.88
  5. Step 5: Solve for x
    x = 134,966,879.88/13,313.48
  6. Step 6: Final answer
    x = 10,137.61

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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.