Home / 20,679.04-31,003.24-6,630.89

Finding the Fourth Proportional to 20,679.04, 31,003.24 and 6,630.89

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Solution

The fourth proportional to 20,679.04, 31,003.24 and 6,630.89 is: 9,941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.04 : 31,003.24 = 6,630.89 : x
  2. Step 2: Convert to fraction form
    20,679.04/31,003.24 = 6,630.89/x
  3. Step 3: Cross multiply
    20,679.04x = 31,003.24 × 6,630.89
  4. Step 4: Simplify right side
    20,679.04x = 205,579,074.08
  5. Step 5: Solve for x
    x = 205,579,074.08/20,679.04
  6. Step 6: Final answer
    x = 9,941.42

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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.