Home / 20,697.64-31,038.62-8,850.91

Finding the Fourth Proportional to 20,697.64, 31,038.62 and 8,850.91

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Solution

The fourth proportional to 20,697.64, 31,038.62 and 8,850.91 is: 13,273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.64 : 31,038.62 = 8,850.91 : x
  2. Step 2: Convert to fraction form
    20,697.64/31,038.62 = 8,850.91/x
  3. Step 3: Cross multiply
    20,697.64x = 31,038.62 × 8,850.91
  4. Step 4: Simplify right side
    20,697.64x = 274,719,987.89
  5. Step 5: Solve for x
    x = 274,719,987.89/20,697.64
  6. Step 6: Final answer
    x = 13,273.01

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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.