Home / 13,821.15-20,733.78-4,935.78

Finding the Fourth Proportional to 13,821.15, 20,733.78 and 4,935.78

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Solution

The fourth proportional to 13,821.15, 20,733.78 and 4,935.78 is: 7,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.15 : 20,733.78 = 4,935.78 : x
  2. Step 2: Convert to fraction form
    13,821.15/20,733.78 = 4,935.78/x
  3. Step 3: Cross multiply
    13,821.15x = 20,733.78 × 4,935.78
  4. Step 4: Simplify right side
    13,821.15x = 102,337,376.65
  5. Step 5: Solve for x
    x = 102,337,376.65/13,821.15
  6. Step 6: Final answer
    x = 7,404.40

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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.