Home / 13,595.72-20,388.09-5,271.35

Finding the Fourth Proportional to 13,595.72, 20,388.09 and 5,271.35

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Solution

The fourth proportional to 13,595.72, 20,388.09 and 5,271.35 is: 7,904.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,595.72 : 20,388.09 = 5,271.35 : x
  2. Step 2: Convert to fraction form
    13,595.72/20,388.09 = 5,271.35/x
  3. Step 3: Cross multiply
    13,595.72x = 20,388.09 × 5,271.35
  4. Step 4: Simplify right side
    13,595.72x = 107,472,758.22
  5. Step 5: Solve for x
    x = 107,472,758.22/13,595.72
  6. Step 6: Final answer
    x = 7,904.90

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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.