Home / 15,627.99-21,568.39-8,915.28

Finding the Fourth Proportional to 15,627.99, 21,568.39 and 8,915.28

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Solution

The fourth proportional to 15,627.99, 21,568.39 and 8,915.28 is: 12,304.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.99 : 21,568.39 = 8,915.28 : x
  2. Step 2: Convert to fraction form
    15,627.99/21,568.39 = 8,915.28/x
  3. Step 3: Cross multiply
    15,627.99x = 21,568.39 × 8,915.28
  4. Step 4: Simplify right side
    15,627.99x = 192,288,191.42
  5. Step 5: Solve for x
    x = 192,288,191.42/15,627.99
  6. Step 6: Final answer
    x = 12,304.09

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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.