Home / 13,183.80-18,193.65-7,215.51

Finding the Fourth Proportional to 13,183.80, 18,193.65 and 7,215.51

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Solution

The fourth proportional to 13,183.80, 18,193.65 and 7,215.51 is: 9,957.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.80 : 18,193.65 = 7,215.51 : x
  2. Step 2: Convert to fraction form
    13,183.80/18,193.65 = 7,215.51/x
  3. Step 3: Cross multiply
    13,183.80x = 18,193.65 × 7,215.51
  4. Step 4: Simplify right side
    13,183.80x = 131,276,463.51
  5. Step 5: Solve for x
    x = 131,276,463.51/13,183.80
  6. Step 6: Final answer
    x = 9,957.41

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Half scale
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Double scale
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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.