Home / 20,009.42-30,017.57-8,915.85

Finding the Fourth Proportional to 20,009.42, 30,017.57 and 8,915.85

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Solution

The fourth proportional to 20,009.42, 30,017.57 and 8,915.85 is: 13,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.42 : 30,017.57 = 8,915.85 : x
  2. Step 2: Convert to fraction form
    20,009.42/30,017.57 = 8,915.85/x
  3. Step 3: Cross multiply
    20,009.42x = 30,017.57 × 8,915.85
  4. Step 4: Simplify right side
    20,009.42x = 267,632,106.91
  5. Step 5: Solve for x
    x = 267,632,106.91/20,009.42
  6. Step 6: Final answer
    x = 13,375.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.