Home / 13,329.75-18,396.68-7,740.75

Finding the Fourth Proportional to 13,329.75, 18,396.68 and 7,740.75

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Solution

The fourth proportional to 13,329.75, 18,396.68 and 7,740.75 is: 10,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,329.75 : 18,396.68 = 7,740.75 : x
  2. Step 2: Convert to fraction form
    13,329.75/18,396.68 = 7,740.75/x
  3. Step 3: Cross multiply
    13,329.75x = 18,396.68 × 7,740.75
  4. Step 4: Simplify right side
    13,329.75x = 142,404,100.71
  5. Step 5: Solve for x
    x = 142,404,100.71/13,329.75
  6. Step 6: Final answer
    x = 10,683.18

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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.