Home / 13,291.05-18,341.88-7,322.68

Finding the Fourth Proportional to 13,291.05, 18,341.88 and 7,322.68

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Solution

The fourth proportional to 13,291.05, 18,341.88 and 7,322.68 is: 10,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.05 : 18,341.88 = 7,322.68 : x
  2. Step 2: Convert to fraction form
    13,291.05/18,341.88 = 7,322.68/x
  3. Step 3: Cross multiply
    13,291.05x = 18,341.88 × 7,322.68
  4. Step 4: Simplify right side
    13,291.05x = 134,311,626.13
  5. Step 5: Solve for x
    x = 134,311,626.13/13,291.05
  6. Step 6: Final answer
    x = 10,105.42

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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.