Home / 13,868.62-20,783.45-9,191.85

Finding the Fourth Proportional to 13,868.62, 20,783.45 and 9,191.85

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Solution

The fourth proportional to 13,868.62, 20,783.45 and 9,191.85 is: 13,774.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.62 : 20,783.45 = 9,191.85 : x
  2. Step 2: Convert to fraction form
    13,868.62/20,783.45 = 9,191.85/x
  3. Step 3: Cross multiply
    13,868.62x = 20,783.45 × 9,191.85
  4. Step 4: Simplify right side
    13,868.62x = 191,038,299.92
  5. Step 5: Solve for x
    x = 191,038,299.92/13,868.62
  6. Step 6: Final answer
    x = 13,774.86

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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.