Home / 13,157.78-19,740.11-5,763.69

Finding the Fourth Proportional to 13,157.78, 19,740.11 and 5,763.69

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Solution

The fourth proportional to 13,157.78, 19,740.11 and 5,763.69 is: 8,647.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.78 : 19,740.11 = 5,763.69 : x
  2. Step 2: Convert to fraction form
    13,157.78/19,740.11 = 5,763.69/x
  3. Step 3: Cross multiply
    13,157.78x = 19,740.11 × 5,763.69
  4. Step 4: Simplify right side
    13,157.78x = 113,775,845.79
  5. Step 5: Solve for x
    x = 113,775,845.79/13,157.78
  6. Step 6: Final answer
    x = 8,647.04

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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.