Home / 13,146.52-18,142.18-9,792.20

Finding the Fourth Proportional to 13,146.52, 18,142.18 and 9,792.20

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Solution

The fourth proportional to 13,146.52, 18,142.18 and 9,792.20 is: 13,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.52 : 18,142.18 = 9,792.20 : x
  2. Step 2: Convert to fraction form
    13,146.52/18,142.18 = 9,792.20/x
  3. Step 3: Cross multiply
    13,146.52x = 18,142.18 × 9,792.20
  4. Step 4: Simplify right side
    13,146.52x = 177,651,855.00
  5. Step 5: Solve for x
    x = 177,651,855.00/13,146.52
  6. Step 6: Final answer
    x = 13,513.22

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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.