Home / 13,190.19-18,202.64-7,222.11

Finding the Fourth Proportional to 13,190.19, 18,202.64 and 7,222.11

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Solution

The fourth proportional to 13,190.19, 18,202.64 and 7,222.11 is: 9,966.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.19 : 18,202.64 = 7,222.11 : x
  2. Step 2: Convert to fraction form
    13,190.19/18,202.64 = 7,222.11/x
  3. Step 3: Cross multiply
    13,190.19x = 18,202.64 × 7,222.11
  4. Step 4: Simplify right side
    13,190.19x = 131,461,432.26
  5. Step 5: Solve for x
    x = 131,461,432.26/13,190.19
  6. Step 6: Final answer
    x = 9,966.61

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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.