Home / 13,815.56-20,706.72-5,045.72

Finding the Fourth Proportional to 13,815.56, 20,706.72 and 5,045.72

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Solution

The fourth proportional to 13,815.56, 20,706.72 and 5,045.72 is: 7,562.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.56 : 20,706.72 = 5,045.72 : x
  2. Step 2: Convert to fraction form
    13,815.56/20,706.72 = 5,045.72/x
  3. Step 3: Cross multiply
    13,815.56x = 20,706.72 × 5,045.72
  4. Step 4: Simplify right side
    13,815.56x = 104,480,311.24
  5. Step 5: Solve for x
    x = 104,480,311.24/13,815.56
  6. Step 6: Final answer
    x = 7,562.51

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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.