Home / 13,169.60-18,172.56-7,792.20

Finding the Fourth Proportional to 13,169.60, 18,172.56 and 7,792.20

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Solution

The fourth proportional to 13,169.60, 18,172.56 and 7,792.20 is: 10,752.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.60 : 18,172.56 = 7,792.20 : x
  2. Step 2: Convert to fraction form
    13,169.60/18,172.56 = 7,792.20/x
  3. Step 3: Cross multiply
    13,169.60x = 18,172.56 × 7,792.20
  4. Step 4: Simplify right side
    13,169.60x = 141,604,183.07
  5. Step 5: Solve for x
    x = 141,604,183.07/13,169.60
  6. Step 6: Final answer
    x = 10,752.35

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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.