Home / 13,942.81-20,915.17-5,622.90

Finding the Fourth Proportional to 13,942.81, 20,915.17 and 5,622.90

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Solution

The fourth proportional to 13,942.81, 20,915.17 and 5,622.90 is: 8,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.81 : 20,915.17 = 5,622.90 : x
  2. Step 2: Convert to fraction form
    13,942.81/20,915.17 = 5,622.90/x
  3. Step 3: Cross multiply
    13,942.81x = 20,915.17 × 5,622.90
  4. Step 4: Simplify right side
    13,942.81x = 117,603,909.39
  5. Step 5: Solve for x
    x = 117,603,909.39/13,942.81
  6. Step 6: Final answer
    x = 8,434.74

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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.