Home / 13,288.44-18,338.88-7,320.09

Finding the Fourth Proportional to 13,288.44, 18,338.88 and 7,320.09

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Solution

The fourth proportional to 13,288.44, 18,338.88 and 7,320.09 is: 10,102.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.44 : 18,338.88 = 7,320.09 : x
  2. Step 2: Convert to fraction form
    13,288.44/18,338.88 = 7,320.09/x
  3. Step 3: Cross multiply
    13,288.44x = 18,338.88 × 7,320.09
  4. Step 4: Simplify right side
    13,288.44x = 134,242,252.10
  5. Step 5: Solve for x
    x = 134,242,252.10/13,288.44
  6. Step 6: Final answer
    x = 10,102.18

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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.