Home / 20,964.80-28,930.74-12,466.92

Finding the Fourth Proportional to 20,964.80, 28,930.74 and 12,466.92

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Solution

The fourth proportional to 20,964.80, 28,930.74 and 12,466.92 is: 17,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.80 : 28,930.74 = 12,466.92 : x
  2. Step 2: Convert to fraction form
    20,964.80/28,930.74 = 12,466.92/x
  3. Step 3: Cross multiply
    20,964.80x = 28,930.74 × 12,466.92
  4. Step 4: Simplify right side
    20,964.80x = 360,677,221.12
  5. Step 5: Solve for x
    x = 360,677,221.12/20,964.80
  6. Step 6: Final answer
    x = 17,203.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.