Home / 13,157.40-19,722.80-5,665.85

Finding the Fourth Proportional to 13,157.40, 19,722.80 and 5,665.85

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Solution

The fourth proportional to 13,157.40, 19,722.80 and 5,665.85 is: 8,493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.40 : 19,722.80 = 5,665.85 : x
  2. Step 2: Convert to fraction form
    13,157.40/19,722.80 = 5,665.85/x
  3. Step 3: Cross multiply
    13,157.40x = 19,722.80 × 5,665.85
  4. Step 4: Simplify right side
    13,157.40x = 111,746,426.38
  5. Step 5: Solve for x
    x = 111,746,426.38/13,157.40
  6. Step 6: Final answer
    x = 8,493.05

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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.