Home / 15,188.26-20,968.41-9,880.42

Finding the Fourth Proportional to 15,188.26, 20,968.41 and 9,880.42

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Solution

The fourth proportional to 15,188.26, 20,968.41 and 9,880.42 is: 13,640.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.26 : 20,968.41 = 9,880.42 : x
  2. Step 2: Convert to fraction form
    15,188.26/20,968.41 = 9,880.42/x
  3. Step 3: Cross multiply
    15,188.26x = 20,968.41 × 9,880.42
  4. Step 4: Simplify right side
    15,188.26x = 207,176,697.53
  5. Step 5: Solve for x
    x = 207,176,697.53/15,188.26
  6. Step 6: Final answer
    x = 13,640.58

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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.