Home / 20,829.42-31,244.04-5,247

Finding the Fourth Proportional to 20,829.42, 31,244.04 and 5,247

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Solution

The fourth proportional to 20,829.42, 31,244.04 and 5,247 is: 7,870.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.42 : 31,244.04 = 5,247 : x
  2. Step 2: Convert to fraction form
    20,829.42/31,244.04 = 5,247/x
  3. Step 3: Cross multiply
    20,829.42x = 31,244.04 × 5,247
  4. Step 4: Simplify right side
    20,829.42x = 163,937,477.88
  5. Step 5: Solve for x
    x = 163,937,477.88/20,829.42
  6. Step 6: Final answer
    x = 7,870.48

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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.