Home / 13,190.34-18,202.59-7,221.90

Finding the Fourth Proportional to 13,190.34, 18,202.59 and 7,221.90

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Solution

The fourth proportional to 13,190.34, 18,202.59 and 7,221.90 is: 9,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.34 : 18,202.59 = 7,221.90 : x
  2. Step 2: Convert to fraction form
    13,190.34/18,202.59 = 7,221.90/x
  3. Step 3: Cross multiply
    13,190.34x = 18,202.59 × 7,221.90
  4. Step 4: Simplify right side
    13,190.34x = 131,457,284.72
  5. Step 5: Solve for x
    x = 131,457,284.72/13,190.34
  6. Step 6: Final answer
    x = 9,966.18

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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.