Home / 13,190.29-18,202.71-7,222.02

Finding the Fourth Proportional to 13,190.29, 18,202.71 and 7,222.02

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Solution

The fourth proportional to 13,190.29, 18,202.71 and 7,222.02 is: 9,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.29 : 18,202.71 = 7,222.02 : x
  2. Step 2: Convert to fraction form
    13,190.29/18,202.71 = 7,222.02/x
  3. Step 3: Cross multiply
    13,190.29x = 18,202.71 × 7,222.02
  4. Step 4: Simplify right side
    13,190.29x = 131,460,335.67
  5. Step 5: Solve for x
    x = 131,460,335.67/13,190.29
  6. Step 6: Final answer
    x = 9,966.45

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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.